Freshwater aquarium fish
Freshwater fish cover the widest range of tanks, from a first betta to a planted community or a species-only cichlid setup. Each profile lists the tank size, temperature and pH a fish is comfortable in, plus how it behaves with tankmates.
1007 species
Adolfo's cory
Corydoras adolfoi2.4 in (6 cm)20 gal (75 L)70–79°F (21–26°C)
Adonis Pleco (L155)
Acanthicus adonis35.4 in (90 cm)264 gal (1,000 L)77–84°F (25–29°C)
Afra cichlid
Cynotilapia afra3.9 in (10 cm)29 gal (110 L)77–84°F (25–29°C)
African Banded Barb
Barbus fasciolatus2.4 in (6 cm)20 gal (75 L)68–79°F (20–26°C)
African Butterfly Barb
Barbus hulstaerti1.4 in (3.5 cm)11 gal (40 L)63–75°F (17–24°C)
African butterfly cichlid
Anomalochromis thomasi3.1 in (8 cm)25 gal (95 L)73–81°F (23–27°C)
African butterflyfish
Pantodon buchholzi4.7 in (12 cm)25 gal (95 L)73–86°F (23–30°C)
African eel catfish
Channallabes apus13 in (33 cm)53 gal (200 L)72–82°F (22–28°C)African freshwater pipefish
Enneacampus ansorgii5.5 in (14 cm)32 gal (120 L)75–82°F (24–28°C)
African knifefish
Xenomystus nigri11.8 in (30 cm)53 gal (200 L)73–82°F (23–28°C)
African leaf fish
Polycentropsis abbreviata3.1 in (8 cm)20 gal (75 L)79–88°F (26–31°C)African Moon Tetra
Bathyaethiops caudomaculatus3.1 in (8 cm)22 gal (85 L)72–77°F (22–25°C)
African oneline tetra
Nannaethiops unitaeniatus2.6 in (6.5 cm)16 gal (60 L)72–79°F (22–26°C)
African snakehead
Parachanna obscura17.7 in (45 cm)74 gal (280 L)79–86°F (26–30°C)
African tigerfish
Hydrocynus vittatus29.5 in (75 cm)1,057 gal (4,000 L)75–82°F (24–28°C)
Agassiz's cory
Corydoras agassizii2.8 in (7 cm)24 gal (90 L)72–79°F (22–26°C)
Agassiz's dwarf cichlid
Apistogramma agassizii3.5 in (9 cm)20 gal (75 L)72–84°F (22–29°C)Akar Betta
Betta akarensis3.1 in (8 cm)20 gal (75 L)70–81°F (21–27°C)
Albater cory
Aspidoras albater1.6 in (4 cm)16 gal (60 L)72–77°F (22–25°C)
Alluaud's haplo
Astatoreochromis alluaudi7.5 in (19 cm)55 gal (210 L)73–82°F (23–28°C)
Altum angelfish
Pterophyllum altum7.1 in (18 cm)45 gal (170 L)79–90°F (26–32°C)
Amazon leaf fish
Monocirrhus polyacanthus3.5 in (9 cm)30 gal (115 L)73–84°F (23–29°C)Amazon molly
Poecilia formosa3.5 in (9 cm)20 gal (75 L)68–82°F (20–28°C)
Amazon puffer
Colomesus asellus4.7 in (12 cm)26 gal (100 L)72–82°F (22–28°C)
Amazon sailfin catfish
Pterygoplichthys pardalis17.7 in (45 cm)100 gal (380 L)72–84°F (22–29°C)
American Flagfish
Jordanella floridae2.2 in (5.5 cm)18 gal (70 L)63–73°F (17–23°C)
Angelfish
Pterophyllum scalare5.9 in (15 cm)30 gal (115 L)75–86°F (24–30°C)Anjungan licorice gourami
Parosphromenus anjunganensis1.4 in (3.5 cm)11 gal (40 L)72–82°F (22–28°C)
Ansorge's neolebias
Neolebias ansorgii1.4 in (3.5 cm)11 gal (40 L)75–82°F (24–28°C)
Apollon betta
Betta apollon2.2 in (5.5 cm)16 gal (60 L)73–81°F (23–27°C)
Arabian toothcarp
Aphanius dispar2.8 in (7 cm)30 gal (115 L)59–86°F (15–30°C)
Arapaima
Arapaima gigas118.1 in (300 cm)10,567 gal (40,000 L)77–86°F (25–30°C)
Argentine Pearl Killifish
Austrolebias nigripinnis2.8 in (7 cm)18 gal (70 L)64–75°F (18–24°C)Argentine pearlfish
Austrolebias bellottii2.8 in (7 cm)14 gal (54 L)61–75°F (16–24°C)Arrowhead Puffer
Pao suvattii5.9 in (15 cm)26 gal (100 L)72–79°F (22–26°C)
Arulius barb
Dawkinsia arulius3.9 in (10 cm)37 gal (140 L)66–77°F (19–25°C)
Asian arowana
Scleropages formosus35.4 in (90 cm)264 gal (1,000 L)75–86°F (24–30°C)
Asian banjo catfish
Acrochordonichthys rugosus4.3 in (11 cm)25 gal (95 L)64–75°F (18–24°C)Asian bumblebee catfish
Pseudomystus siamensis5.9 in (15 cm)30 gal (115 L)68–79°F (20–26°C)
Asian redtail catfish
Hemibagrus wyckioides39.4 in (100 cm)450 gal (1,703 L)72–82°F (22–28°C)Asian stone catfish
Hara jerdoni1.6 in (4 cm)11 gal (40 L)64–75°F (18–24°C)Asian upside-down catfish
Mystus leucophasis11.8 in (30 cm)50 gal (190 L)72–79°F (22–26°C)Aspidoras Cory-Cat
Aspidoras raimundi1.8 in (4.5 cm)15 gal (55 L)68–77°F (20–25°C)
Auratus cichlid
Melanochromis auratus4.3 in (11 cm)53 gal (200 L)75–82°F (24–28°C)
Aurora cichlid
Maylandia aurora4.7 in (12 cm)30 gal (115 L)75–81°F (24–27°C)
Australian rainbowfish
Melanotaenia fluviatilis4.3 in (11 cm)30 gal (115 L)68–77°F (20–25°C)
Azureus
Copadichromis azureus5.9 in (15 cm)79 gal (300 L)77–82°F (25–28°C)
Badis
Badis badis2.4 in (6 cm)20 gal (75 L)59–77°F (15–25°C)Balunga Betta
Betta balunga2 in (5 cm)16 gal (60 L)72–81°F (22–27°C)
Banded acara
Bujurquina vittata4.7 in (12 cm)34 gal (130 L)68–82°F (20–28°C)
Banded Archerfish
Toxotes jaculatrix11.8 in (30 cm)119 gal (450 L)77–86°F (25–30°C)
Banded bushfish
Microctenopoma fasciolatum3.1 in (8 cm)24 gal (90 L)75–82°F (24–28°C)
Banded cory
Scleromystax barbatus3.9 in (10 cm)40 gal (150 L)66–75°F (19–24°C)
Banded darter
Etheostoma zonale3.1 in (7.8 cm)26 gal (100 L)59–70°F (15–21°C)
Banded Gourami
Trichogaster fasciata3.5 in (9 cm)26 gal (100 L)70–82°F (21–28°C)
Banded jewel cichlid
Hemichromis elongatus6.3 in (16 cm)53 gal (200 L)75–82°F (24–28°C)
Banded knifefish
Gymnotus carapo15.7 in (40 cm)79 gal (300 L)73–82°F (23–28°C)
Banded leporinus
Leporinus fasciatus10.6 in (27 cm)40 gal (150 L)68–82°F (20–28°C)
Banded rainbowfish
Melanotaenia trifasciata5.9 in (15 cm)50 gal (190 L)75–84°F (24–29°C)
Banded sunfish
Enneacanthus obesus3.5 in (9 cm)20 gal (75 L)64–72°F (18–22°C)
Banded tiger loach
Syncrossus helodes11.8 in (30 cm)75 gal (285 L)75–86°F (24–30°C)
Bandit cichlid
Guianacara geayi5.1 in (13 cm)40 gal (150 L)75–82°F (24–28°C)
Banjo catfish
Bunocephalus coracoideus5.9 in (15 cm)25 gal (95 L)72–81°F (22–27°C)Bannertail cory
Corydoras robineae2.6 in (6.5 cm)20 gal (75 L)73–79°F (23–26°C)
Bar-tailed hoplo
Megalechis picta5.9 in (15 cm)53 gal (200 L)72–79°F (22–26°C)
Barred bichir
Polypterus delhezi13.8 in (35 cm)53 gal (200 L)75–86°F (24–30°C)Barred danio
Devario pathirana2.4 in (6 cm)24 gal (90 L)70–79°F (21–26°C)
Barred loach
Nemacheilus fasciatus3.1 in (8 cm)24 gal (90 L)68–77°F (20–25°C)
Barred pencilfish
Nannostomus espei1.2 in (3 cm)15 gal (55 L)72–82°F (22–28°C)
Barred rainbowfish
Chilatherina fasciata4.7 in (12 cm)53 gal (200 L)75–86°F (24–30°C)
Barred-tail cory
Corydoras cochui1.4 in (3.5 cm)13 gal (50 L)70–82°F (21–28°C)
Basketmouth cichlid
Caquetaia kraussii11.8 in (30 cm)79 gal (300 L)79–86°F (26–30°C)
Bay snook
Petenia splendida19.7 in (50 cm)151 gal (570 L)77–86°F (25–30°C)
Bengal danio
Devario devario3.5 in (9 cm)34 gal (130 L)59–81°F (15–27°C)
Bengal loach
Botia dario5.1 in (13 cm)37 gal (140 L)73–79°F (23–26°C)
Betta
Betta splendens3 in (7.5 cm)7 gal (25 L)72–86°F (22–30°C)
Biara
Rhaphiodon vulpinus31.5 in (80 cm)660 gal (2,500 L)73–82°F (23–28°C)
Bigeye squeaker
Synodontis alberti7.9 in (20 cm)40 gal (150 L)72–79°F (22–26°C)Bigspot barb
Barbodes dunckeri5.1 in (13 cm)53 gal (200 L)75–82°F (24–28°C)
Bigtooth river stingray
Potamotrygon henlei21.7 in (55 cm)396 gal (1,500 L)75–82°F (24–28°C)Black acara
Cichlasoma bimaculatum7.1 in (18 cm)40 gal (150 L)68–82°F (20–28°C)
Black arowana
Osteoglossum ferreirai35.4 in (90 cm)396 gal (1,500 L)79–86°F (26–30°C)
Black band cory
Corydoras zygatus2.6 in (6.5 cm)21 gal (80 L)72–79°F (22–26°C)
Black calvus
Altolamprologus calvus5.1 in (13 cm)53 gal (200 L)75–81°F (24–27°C)
Black devil stingray
Potamotrygon leopoldi23.6 in (60 cm)436 gal (1,650 L)68–84°F (20–29°C)
Black ghost knifefish
Apteronotus albifrons17.7 in (45 cm)85 gal (320 L)75–82°F (24–28°C)Black lancer catfish
Bagrichthys macracanthus9.1 in (23 cm)55 gal (210 L)75–82°F (24–28°C)
Black molly
Poecilia sphenops4.7 in (12 cm)24 gal (90 L)70–82°F (21–28°C)
Black Moor
Carassius auratus7.9 in (20 cm)25 gal (95 L)61–75°F (16–24°C)
Black Neon Tetra
Hyphessobrycon herbertaxelrodi1.4 in (3.5 cm)16 gal (60 L)72–82°F (22–28°C)
Black Pacu
Colossoma macropomum39.4 in (100 cm)660 gal (2,500 L)72–82°F (22–28°C)
Black paradise fish
Macropodus spechti3.1 in (8 cm)20 gal (75 L)68–82°F (20–28°C)
Black phantom tetra
Hyphessobrycon megalopterus1.4 in (3.6 cm)17 gal (65 L)70–82°F (21–28°C)Black piranha
Serrasalmus rhombeus15.7 in (40 cm)106 gal (400 L)75–82°F (24–28°C)
Black ruby barb
Pethia nigrofasciata2.4 in (6 cm)20 gal (75 L)72–79°F (22–26°C)
Black Shark
Labeo chrysophekadion23.6 in (60 cm)660 gal (2,500 L)68–79°F (20–26°C)Black toraja goby
Mugilogobius sarasinorum3.1 in (8 cm)21 gal (80 L)79–82°F (26–28°C)
Black widow tetra
Gymnocorymbus ternetzi2.4 in (6 cm)20 gal (75 L)68–79°F (20–26°C)
Black-banded rainbowfish
Melanotaenia nigrans3.9 in (10 cm)32 gal (120 L)72–82°F (22–28°C)
Black-barred livebearer
Quintana atrizona1.3 in (3.4 cm)11 gal (40 L)72–82°F (22–28°C)Black-lined loach
Ambastaia nigrolineata3.1 in (8 cm)24 gal (90 L)72–81°F (22–27°C)
Blackbanded sunfish
Enneacanthus chaetodon3.9 in (10 cm)20 gal (75 L)39–75°F (4–24°C)
Blackbelly limia
Limia melanogaster2.4 in (6 cm)16 gal (60 L)72–82°F (22–28°C)
Blackbelt Cichlid
Vieja maculicauda12.6 in (32 cm)66 gal (250 L)72–82°F (22–28°C)
Blackfin Cory
Corydoras leucomelas1.8 in (4.5 cm)16 gal (60 L)73–79°F (23–26°C)Blackfin goodea
Goodea atripinnis7.1 in (18 cm)53 gal (200 L)61–79°F (16–26°C)Blackstripe cory
Corydoras bondi2 in (5 cm)15 gal (55 L)70–79°F (21–26°C)Blacktop cory
Corydoras acutus1.7 in (4.4 cm)13 gal (50 L)72–82°F (22–28°C)
Blackwing hatchetfish
Carnegiella marthae1.4 in (3.5 cm)30 gal (115 L)68–82°F (20–28°C)
Bleeding heart tetra
Hyphessobrycon erythrostigma2.4 in (6 cm)20 gal (75 L)70–81°F (21–27°C)
Bleher's rainbowfish
Chilatherina bleheri4.7 in (12 cm)53 gal (200 L)73–81°F (23–27°C)
Blind cave tetra
Astyanax mexicanus4.7 in (12 cm)25 gal (95 L)70–77°F (21–25°C)
Bloch's catfish
Pimelodus blochii9.8 in (25 cm)53 gal (200 L)68–79°F (20–26°C)
Blockhead Cichlid
Steatocranus casuarius4.7 in (12 cm)25 gal (95 L)75–82°F (24–28°C)
Blood Parrot Cichlid
A. citrinellus x V. synspilum7.9 in (20 cm)32 gal (120 L)72–82°F (22–28°C)
Blood-red jewel cichlid
Hemichromis lifalili3.9 in (10 cm)20 gal (75 L)73–79°F (23–26°C)
Bloodfin tetra
Aphyocharax anisitsi2.2 in (5.5 cm)20 gal (75 L)72–82°F (22–28°C)
Blue acara
Andinoacara pulcher5.9 in (15 cm)42 gal (160 L)72–82°F (22–28°C)Blue axelrodi rasbora
Sundadanio axelrodi0.8 in (2 cm)12 gal (45 L)73–79°F (23–26°C)
Blue cory
Corydoras nattereri2.6 in (6.5 cm)20 gal (75 L)68–73°F (20–23°C)
Blue danio
Danio kerri1.8 in (4.5 cm)11 gal (40 L)68–79°F (20–26°C)
Blue dolphin cichlid
Cyrtocara moorii9.8 in (25 cm)66 gal (250 L)77–84°F (25–29°C)
Blue gularis
Fundulopanchax sjoestedti4.7 in (12 cm)21 gal (80 L)72–79°F (22–26°C)
Blue johanni cichlid
Melanochromis cyaneorhabdos3.9 in (10 cm)45 gal (170 L)75–82°F (24–28°C)
Blue Neon Cichlid
Paracyprichromis nigripinnis4.3 in (11 cm)48 gal (180 L)75–81°F (24–27°C)Blue neon dwarf goby
Stiphodon atropurpureus2 in (5 cm)20 gal (75 L)72–81°F (22–27°C)Blue Panaque (L239)
Baryancistrus beggini4.7 in (12 cm)30 gal (115 L)79–86°F (26–30°C)
Blue panchax
Aplocheilus panchax3.5 in (9 cm)20 gal (75 L)72–82°F (22–28°C)Blue Phantom Pleco (L128)
Hemiancistrus sp. L1289.8 in (25 cm)66 gal (250 L)81–86°F (27–30°C)
Blue ram
Mikrogeophagus ramirezi2.4 in (6 cm)18 gal (70 L)81–86°F (27–30°C)
Blue snakehead
Channa andrao5.5 in (14 cm)29 gal (110 L)59–77°F (15–25°C)
Blue spotted hill trout
Barilius bakeri5.1 in (13 cm)53 gal (200 L)64–79°F (18–26°C)
Blue tetra
Knodus borki2 in (5 cm)22 gal (85 L)72–79°F (22–26°C)
Blue whale catfish
Cetopsis coecutiens10.6 in (27 cm)70 gal (265 L)72–79°F (22–26°C)
Blue zaire frontosa
Cyphotilapia gibberosa13.8 in (35 cm)119 gal (450 L)75–81°F (24–27°C)
Blue-eyed livebearer
Priapella intermedia2.8 in (7 cm)24 gal (90 L)72–82°F (22–28°C)
Blue-eyed pleco
Panaque cochliodon11.8 in (30 cm)119 gal (450 L)73–82°F (23–28°C)Blue-eyed Tropheus
Tropheus brichardi4.3 in (11 cm)37 gal (140 L)73–82°F (23–28°C)
Bluefin killifish
Lucania goodei2 in (5 cm)11 gal (40 L)64–77°F (18–25°C)
Bluefin Notho
Nothobranchius rachovii2.4 in (6 cm)21 gal (80 L)68–75°F (20–24°C)
Bluegill Sunfish
Lepomis macrochirus13.8 in (35 cm)70 gal (265 L)41–73°F (5–23°C)
Blunt-jawed elephantnose
Campylomormyrus tamandua15.7 in (40 cm)172 gal (650 L)73–82°F (23–28°C)
Blunthead cichlid
Tropheus moorii5.5 in (14 cm)92 gal (350 L)75–81°F (24–27°C)
Boeseman's rainbowfish
Melanotaenia boesemani4.3 in (11 cm)30 gal (115 L)81–86°F (27–30°C)
Bolivian ram
Mikrogeophagus altispinosus3.1 in (8 cm)45 gal (170 L)75–82°F (24–28°C)
Bolt catfish
Aguarunichthys torosus13.4 in (34 cm)120 gal (455 L)72–81°F (22–27°C)
Bornean leaf fish
Nandus nebulosus4.7 in (12 cm)25 gal (95 L)72–79°F (22–26°C)
Borneo glass catfish
Ompok eugeneiatus6.5 in (16.5 cm)45 gal (170 L)70–82°F (21–28°C)
Borneo hillstream loach
Gastromyzon ctenocephalus1.6 in (4 cm)20 gal (75 L)68–75°F (20–24°C)Bottlenose catfish
Ageneiosus marmoratus7.9 in (20 cm)95 gal (360 L)72–79°F (22–26°C)
Brevis Shell Dweller
Neolamprologus brevis2.4 in (6 cm)16 gal (60 L)73–81°F (23–27°C)
Brichard's chalinochromis
Chalinochromis brichardi4.7 in (12 cm)53 gal (200 L)75–81°F (24–27°C)
Brichard's synodontis
Synodontis brichardi6.3 in (16 cm)50 gal (190 L)72–79°F (22–26°C)
Brilliant rasbora
Rasbora einthovenii3.5 in (9 cm)20 gal (75 L)72–82°F (22–28°C)
Bristlenose pleco
Ancistrus sp.4.9 in (12.5 cm)20 gal (75 L)70–79°F (21–26°C)Brittan’s rasbora
Kottelatia brittani2.4 in (6 cm)16 gal (60 L)68–79°F (20–26°C)
Bronze cory
Corydoras aeneus3 in (7.5 cm)20 gal (75 L)70–81°F (21–27°C)
Bronze featherback
Notopterus notopterus13.8 in (35 cm)79 gal (300 L)75–82°F (24–28°C)
Brook stickleback
Culaea inconstans1.8 in (4.5 cm)20 gal (75 L)50–68°F (10–20°C)
Brown ghost knifefish
Apteronotus leptorhynchus11.8 in (30 cm)85 gal (320 L)75–84°F (24–29°C)
Brown Julie
Julidochromis dickfeldi4.3 in (11 cm)20 gal (75 L)73–81°F (23–27°C)
Brown spiketail paradisefish
Pseudosphromenus dayi2.6 in (6.5 cm)12 gal (45 L)68–82°F (20–28°C)
Brown-Point Shield Skin
Aspidoras fuscoguttatus1.5 in (3.8 cm)13 gal (50 L)72–77°F (22–25°C)Brown's betta
Betta brownorum1.2 in (3 cm)11 gal (40 L)75–82°F (24–28°C)Brunei beauty betta
Betta macrostoma3.9 in (10 cm)20 gal (75 L)72–79°F (22–26°C)
Bubble Eye
Carassius auratus5.9 in (15 cm)20 gal (75 L)64–73°F (18–23°C)
Bucktooth tetra
Exodon paradoxus4.7 in (12 cm)45 gal (170 L)73–82°F (23–28°C)
Buenos Aires tetra
Hyphessobrycon anisitsi3 in (7.5 cm)25 gal (95 L)66–81°F (19–27°C)Bugeye squeaker
Synodontis contractus3.9 in (10 cm)30 gal (114 L)72–79°F (22–26°C)
Bulldog pleco
Chaetostoma formosae4.3 in (11 cm)40 gal (150 L)68–77°F (20–25°C)Bullseye snakehead
Channa marulius47.2 in (120 cm)396 gal (1,500 L)72–82°F (22–28°C)
Bumblebee cichlid
Pseudotropheus crabro5.9 in (15 cm)53 gal (200 L)75–82°F (24–28°C)
Bumblebee goby
Brachygobius doriae1.6 in (4 cm)12 gal (45 L)72–82°F (22–28°C)Bumblebee goodeid
Allotoca dugesii2.8 in (7 cm)20 gal (75 L)64–79°F (18–26°C)Burgess's cory
Corydoras burgessi2.2 in (5.5 cm)20 gal (75 L)72–79°F (22–26°C)
Burmese Badis
Badis ruber2 in (5 cm)20 gal (75 L)64–77°F (18–25°C)
Burmese border loach
Botia histrionica5.1 in (13 cm)53 gal (200 L)72–82°F (22–28°C)
Burton's mouthbrooder
Astatotilapia burtoni5.1 in (13 cm)53 gal (200 L)75–82°F (24–28°C)Butter catfish
Ompok bimaculatus17.7 in (45 cm)53 gal (200 L)68–82°F (20–28°C)
Butterfly goodeid
Ameca splendens4.7 in (12 cm)24 gal (90 L)68–82°F (20–28°C)
Butterfly Loach
Beaufortia kweichowensis3 in (7.5 cm)25 gal (95 L)61–75°F (16–24°C)
Butterfly peacock bass
Cichla ocellaris29.1 in (74 cm)211 gal (800 L)75–82°F (24–28°C)
Butterfly Pleco (L168)
Dekeyseria brachyura5.5 in (14 cm)40 gal (150 L)77–84°F (25–29°C)
Cambodian log sucker
Garra cambodgiensis5.9 in (15 cm)32 gal (120 L)68–81°F (20–27°C)
Canara pearlspot
Etroplus canarensis4.3 in (11 cm)55 gal (210 L)72–90°F (22–32°C)
Candy Striped Pleco (L015)
Peckoltia vittata4.7 in (12 cm)30 gal (115 L)77–84°F (25–29°C)
Cardinal tetra
Paracheirodon axelrodi1.8 in (4.5 cm)16 gal (60 L)73–84°F (23–29°C)
Cardinal toothcarp
Brachyrhaphis roseni2.4 in (6 cm)16 gal (60 L)72–86°F (22–30°C)Cascajal toothcarp
Brachyrhaphis cascajalensis3 in (7.5 cm)11 gal (40 L)75–82°F (24–28°C)
Cascarudo
Callichthys callichthys7.9 in (20 cm)63 gal (240 L)66–81°F (19–27°C)
Cauca molly
Poecilia caucana2.4 in (6 cm)16 gal (60 L)77–86°F (25–30°C)
Caudopunctatus
Neolamprologus caudopunctatus2.8 in (7 cm)20 gal (75 L)75–79°F (24–26°C)
Celebes halfbeak
Nomorhamphus liemi3.5 in (9 cm)40 gal (150 L)68–77°F (20–25°C)
Celebes halfbeak
Nomorhamphus ebrardtii3.5 in (9 cm)29 gal (110 L)75–81°F (24–27°C)
Celebes rainbow
Marosatherina ladigesi3.1 in (8 cm)25 gal (95 L)72–82°F (22–28°C)
Celestial Eye
Carassius auratus5.9 in (15 cm)20 gal (75 L)64–73°F (18–23°C)
Celestial Pearl danio
Danio margaritatus0.8 in (2 cm)9 gal (35 L)72–79°F (22–26°C)
Ceros Tetra
Moenkhausia ceros2 in (5 cm)16 gal (60 L)75–82°F (24–28°C)
Ceylon puffer
Dichotomyctere fluviatilis6.7 in (17 cm)34 gal (130 L)75–82°F (24–28°C)
Chameleon loach
Syncrossus beauforti9.8 in (25 cm)106 gal (400 L)73–82°F (23–28°C)
Chanchito
Australoheros facetus8.7 in (22 cm)53 gal (200 L)59–79°F (15–26°C)
Channel catfish
Ictalurus punctatus39.4 in (100 cm)1,057 gal (4,000 L)50–86°F (10–30°C)
Channoides betta
Betta channoides1.6 in (4 cm)11 gal (40 L)73–82°F (23–28°C)
Checkerboard Cichlid
Dicrossus filamentosus3.5 in (9 cm)20 gal (75 L)79–86°F (26–30°C)
Checkered Barb
Oliotius oligolepis1.8 in (4.5 cm)16 gal (60 L)68–79°F (20–26°C)
Cherry barb
Puntius titteya2 in (5 cm)20 gal (75 L)72–81°F (22–27°C)
Chili rasbora
Boraras brigittae0.8 in (2 cm)7 gal (25 L)72–82°F (22–28°C)
Chinese algae eater
Gyrinocheilus aymonieri11 in (28 cm)46 gal (175 L)72–79°F (22–26°C)Chinese butterfly loach
Pseudogastromyzon cheni2.4 in (6 cm)20 gal (75 L)64–75°F (18–24°C)Chipokee cichlid
Melanochromis chipokae4.7 in (12 cm)53 gal (200 L)75–82°F (24–28°C)Chisel-tooth cichlid
Cincelichthys bocourti11.8 in (30 cm)119 gal (450 L)77–82°F (25–28°C)
Chocolate cichlid
Hypselecara temporalis11.8 in (30 cm)65 gal (245 L)77–86°F (25–30°C)
Chocolate frogmouth catfish
Chaca bankanensis7.9 in (20 cm)45 gal (170 L)75–82°F (24–28°C)
Chocolate gourami
Sphaerichthys osphromenoides2 in (5 cm)17 gal (65 L)79–88°F (26–31°C)
Chukai Betta
Betta tussyae1.6 in (4 cm)11 gal (40 L)73–82°F (23–28°C)
Cinnamon loach
Pangio pangia2.4 in (6 cm)20 gal (75 L)72–81°F (22–27°C)
Climbing perch
Anabas testudineus7.9 in (20 cm)40 gal (150 L)59–86°F (15–30°C)
Clown Barb
Barbodes everetti4.7 in (12 cm)40 gal (150 L)64–82°F (18–28°C)
Clown Killifish
Epiplatys annulatus1.4 in (3.5 cm)15 gal (55 L)68–79°F (20–26°C)
Clown knifefish
Chitala ornata31.5 in (80 cm)125 gal (475 L)68–82°F (20–28°C)
Clown loach
Chromobotia macracanthus11.8 in (30 cm)75 gal (285 L)75–86°F (24–30°C)
Clown peckoltia (L134)
Peckoltia compta4.7 in (12 cm)29 gal (110 L)77–84°F (25–29°C)
Clown pleco
Panaqolus maccus3.5 in (9 cm)20 gal (75 L)73–82°F (23–28°C)
Clown rasbora
Rasbora kalochroma3.9 in (10 cm)34 gal (130 L)73–82°F (23–28°C)
Cobalt blue cichlid
Maylandia callainos5.1 in (13 cm)45 gal (170 L)75–82°F (24–28°C)Cobalt blue goby
Stiphodon semoni1.8 in (4.5 cm)13 gal (50 L)68–79°F (20–26°C)
Cochu's blue tetra
Boehlkea fredcochui2.2 in (5.5 cm)20 gal (75 L)72–82°F (22–28°C)
Cockatoo cichlid
Apistogramma cacatuoides3 in (7.5 cm)18 gal (70 L)72–84°F (22–29°C)
Colombian shark catfish
Ariopsis seemanni13.8 in (35 cm)225 gal (850 L)72–79°F (22–26°C)
Colombian Tetra
Hyphessobrycon columbianus2.6 in (6.5 cm)20 gal (75 L)73–82°F (23–28°C)Colombian Zebra Pleco (L129)
Hypancistrus debilittera3.5 in (9 cm)20 gal (75 L)79–86°F (26–30°C)
Combtail gourami
Belontia signata4.7 in (12 cm)53 gal (200 L)72–82°F (22–28°C)
Comet
Carassius auratus11.8 in (30 cm)50 gal (190 L)39–75°F (4–24°C)
Common goldfish
Carassius auratus7.9 in (20 cm)24 gal (90 L)39–82°F (4–28°C)
Common hatchetfish
Gasteropelecus sternicla1.6 in (4 cm)33 gal (125 L)68–82°F (20–28°C)
Common otocinclus
Otocinclus vittatus2 in (5 cm)20 gal (75 L)72–79°F (22–26°C)
Common pleco
Hypostomus plecostomus15.7 in (40 cm)85 gal (320 L)72–86°F (22–30°C)Common syno
Synodontis nigrita7.9 in (20 cm)55 gal (210 L)70–82°F (21–28°C)
Common woodcat
Trachelyopterus galeatus8.7 in (22 cm)50 gal (190 L)72–82°F (22–28°C)
Compressiceps
Altolamprologus compressiceps5.1 in (13 cm)53 gal (200 L)75–81°F (24–27°C)Compressiceps dwarf pike cichlid
Crenicichla compressiceps3.1 in (8 cm)29 gal (110 L)75–82°F (24–28°C)Concolor cory
Corydoras concolor2.4 in (6 cm)20 gal (75 L)72–79°F (22–26°C)
Congo pufferfish
Tetraodon miurus5.9 in (15 cm)26 gal (100 L)75–82°F (24–28°C)
Congo tetra
Phenacogrammus interruptus3.1 in (8 cm)24 gal (90 L)73–82°F (23–28°C)
Convict Cichlid
Amatitlania nigrofasciata5.9 in (15 cm)25 gal (95 L)75–82°F (24–28°C)
Convict julie
Julidochromis regani5.1 in (13 cm)29 gal (110 L)75–81°F (24–27°C)
Coral red pencilfish
Nannostomus mortenthaleri1.2 in (3 cm)15 gal (55 L)75–82°F (24–28°C)
Crescent betta
Betta imbellis2.4 in (6 cm)12 gal (45 L)68–82°F (20–28°C)
Croaking gourami
Trichopsis vittata2.8 in (7 cm)25 gal (95 L)72–82°F (22–28°C)Crocodile Catfish
Bagarius suchus27.6 in (70 cm)660 gal (2,500 L)64–73°F (18–23°C)Cross loach
Micronemacheilus cruciatus1.6 in (4 cm)14 gal (54 L)68–77°F (20–25°C)Crossband chocolate gourami
Sphaerichthys selatanensis1.8 in (4.5 cm)16 gal (60 L)79–86°F (26–30°C)
Crucian carp
Carassius carassius11.8 in (30 cm)119 gal (450 L)39–75°F (4–24°C)
Cuban cichlid
Nandopsis tetracanthus9.8 in (25 cm)75 gal (285 L)75–82°F (24–28°C)
Cuban limia
Limia vittata3.9 in (10 cm)18 gal (70 L)73–82°F (23–28°C)
Cuckoo squeaker
Synodontis multipunctatus9.8 in (25 cm)50 gal (190 L)75–82°F (24–28°C)Cuming's barb
Pethia cumingii2 in (5 cm)16 gal (60 L)72–81°F (22–27°C)
Cupid cichlid
Biotodoma cupido4.7 in (12 cm)53 gal (200 L)68–86°F (20–30°C)
Cylindricus cichlid
Neolamprologus cylindricus4.7 in (12 cm)29 gal (110 L)75–81°F (24–27°C)
Daffodil cichlid
Neolamprologus pulcher5.1 in (13 cm)29 gal (110 L)75–81°F (24–27°C)
Daisy's Ricefish
Oryzias woworae1.2 in (3 cm)9 gal (35 L)73–81°F (23–27°C)
Dalmatian molly
Poecilia latipinna4.7 in (12 cm)24 gal (90 L)70–79°F (21–26°C)
Danionella cerebrum
Danionella cerebrum0.5 in (1.3 cm)8 gal (30 L)72–82°F (22–28°C)
Darter tetra
Characidium fasciatum2.8 in (7 cm)16 gal (60 L)68–79°F (20–26°C)
Decorated squeaker
Synodontis decorus11.8 in (30 cm)53 gal (200 L)72–81°F (22–27°C)
Deepwater hap
Placidochromis electra7.1 in (18 cm)66 gal (250 L)75–81°F (24–27°C)
Delicate blue-eye
Pseudomugil tenellus2.2 in (5.5 cm)20 gal (75 L)77–90°F (25–32°C)
Demon eartheater
Satanoperca jurupari7.1 in (18 cm)119 gal (450 L)75–82°F (24–28°C)
Desert goby
Chlamydogobius eremius2.4 in (6 cm)16 gal (60 L)64–82°F (18–28°C)
Diamond tetra
Moenkhausia pittieri2.4 in (6 cm)20 gal (75 L)75–82°F (24–28°C)
Dimidiata betta
Betta dimidiata1.6 in (4 cm)12 gal (45 L)72–81°F (22–27°C)
Dirty Bandit Cory
Corydoras loxozonus2 in (5 cm)16 gal (60 L)70–75°F (21–24°C)
Discus
Symphysodon aequifasciatus7.9 in (20 cm)65 gal (245 L)79–90°F (26–32°C)
Disk tetra
Myleus schomburgkii15.7 in (40 cm)170 gal (645 L)73–81°F (23–27°C)
Doctor Fish
Garra rufa4.7 in (12 cm)29 gal (110 L)57–68°F (14–20°C)
Drab Sole
Achirus achirus14.6 in (37 cm)98 gal (370 L)77–86°F (25–30°C)
Dracula fish
Danionella dracula0.7 in (1.7 cm)11 gal (40 L)68–79°F (20–26°C)
Drape-fin barb
Oreichthys crenuchoides1.6 in (4 cm)14 gal (54 L)73–82°F (23–28°C)
Duboulayi's rainbowfish
Melanotaenia duboulayi4.7 in (12 cm)30 gal (115 L)64–82°F (18–28°C)
Duckbill Catfish
Sorubim lima19.7 in (50 cm)190 gal (720 L)73–86°F (23–30°C)
Duplicate cory
Corydoras duplicareus2 in (5 cm)20 gal (75 L)72–79°F (22–26°C)
Dusky millions fish
Phalloceros caudimaculatus2.4 in (6 cm)12 gal (45 L)64–75°F (18–24°C)Dwarf barb
Pethia phutunio1.4 in (3.5 cm)12 gal (45 L)72–79°F (22–26°C)
Dwarf botia
Ambastaia sidthimunki2.4 in (6 cm)20 gal (75 L)68–86°F (20–30°C)
Dwarf bumblebee catfish
Pseudomystus leiacanthus2.4 in (6 cm)20 gal (75 L)70–77°F (21–25°C)
Dwarf cory
Corydoras hastatus1.3 in (3.2 cm)12 gal (45 L)68–79°F (20–26°C)
Dwarf flag cichlid
Laetacara curviceps2.2 in (5.5 cm)20 gal (75 L)68–82°F (20–28°C)
Dwarf gourami
Trichogaster lalius3 in (7.5 cm)16 gal (60 L)72–81°F (22–27°C)Dwarf hoplo
Lepthoplosternum pectorale2.6 in (6.5 cm)24 gal (90 L)68–75°F (20–24°C)
Dwarf livebearer
Neoheterandria elegans1 in (2.5 cm)5 gal (20 L)75–82°F (24–28°C)
Dwarf Mbuna
Pseudotropheus demasoni3.9 in (10 cm)53 gal (200 L)75–82°F (24–28°C)
Dwarf pencilfish
Nannostomus marginatus1 in (2.5 cm)12 gal (45 L)72–82°F (22–28°C)Dwarf petricola
Synodontis lucipinnis3.9 in (10 cm)30 gal (114 L)73–81°F (23–27°C)
Dwarf pike cichlid
Crenicichla regani4.7 in (12 cm)40 gal (150 L)75–82°F (24–28°C)
Dwarf pufferfish
Carinotetraodon travancoricus1.1 in (2.9 cm)15 gal (55 L)72–82°F (22–28°C)
Dwarf rainbowfish
Melanotaenia maccullochi2.8 in (7 cm)20 gal (75 L)72–82°F (22–28°C)
Dwarf rasbora
Boraras maculatus1 in (2.5 cm)7 gal (25 L)72–82°F (22–28°C)
Dwarf snakehead
Channa gachua7.9 in (20 cm)40 gal (150 L)64–82°F (18–28°C)
Eartheater cichlid
Geophagus altifrons9.8 in (25 cm)115 gal (435 L)79–90°F (26–32°C)
Eastern mosquitofish
Gambusia holbrooki3.1 in (8 cm)11 gal (40 L)59–84°F (15–29°C)
Eastern rainbowfish
Melanotaenia splendida splendida5.9 in (15 cm)50 gal (190 L)75–84°F (24–29°C)
Edith's betta
Betta edithae2.4 in (6 cm)20 gal (75 L)72–81°F (22–27°C)Eel kuhli loach
Pangio anguillaris4.7 in (12 cm)20 gal (75 L)72–82°F (22–28°C)
Eggers' notho
Nothobranchius eggersi2 in (5 cm)11 gal (40 L)68–79°F (20–26°C)
Egyptian mouthbrooder
Pseudocrenilabrus multicolor3.1 in (8 cm)20 gal (75 L)72–79°F (22–26°C)Ehrhardt's cory
Corydoras ehrhardti2 in (5 cm)16 gal (60 L)66–77°F (19–25°C)
Electric Blue Hap
Sciaenochromis fryeri7.1 in (18 cm)66 gal (250 L)75–82°F (24–28°C)
Electric catfish
Malapterurus electricus39.4 in (100 cm)198 gal (750 L)73–82°F (23–28°C)
Electric yellow cichlid
Labidochromis caeruleus4.7 in (12 cm)42 gal (160 L)75–82°F (24–28°C)
Elegant cory
Corydoras elegans2.1 in (5.4 cm)16 gal (60 L)68–79°F (20–26°C)Elizabeth's dwarf cichlid
Apistogramma elizabethae2 in (5 cm)20 gal (75 L)75–84°F (24–29°C)
Ellioti cichlid
Thorichthys maculipinnis5.9 in (15 cm)53 gal (200 L)75–82°F (24–28°C)Elongate mbuna
Chindongo elongatus5.1 in (13 cm)53 gal (200 L)75–81°F (24–27°C)
Ember tetra
Hyphessobrycon amandae0.8 in (2 cm)9 gal (35 L)72–82°F (22–28°C)
Emerald betta
Betta smaragdina2.4 in (6 cm)11 gal (40 L)72–82°F (22–28°C)
Emerald catfish
Corydoras splendens3.1 in (8 cm)40 gal (150 L)70–82°F (21–28°C)
Emerald dwarf rasbora
Danio erythromicron0.8 in (2 cm)11 gal (40 L)68–75°F (20–24°C)
Emperor tetra
Nematobrycon palmeri2 in (5 cm)20 gal (75 L)73–81°F (23–27°C)
Empire gudgeon
Hypseleotris compressa4.7 in (12 cm)26 gal (100 L)68–95°F (20–35°C)
Endler's livebearer
Poecilia wingei1.6 in (4 cm)5 gal (20 L)72–86°F (22–30°C)
Enisae betta
Betta enisae2.4 in (6 cm)16 gal (60 L)70–77°F (21–25°C)
Espei rasbora
Trigonostigma espei1.5 in (3.8 cm)11 gal (40 L)73–82°F (23–28°C)
Eureka red peacock
Aulonocara jacobfreibergi6.7 in (17 cm)63 gal (240 L)77–84°F (25–29°C)
European Bitterling
Rhodeus amarus3.9 in (10 cm)34 gal (130 L)55–72°F (13–22°C)
European minnow
Phoxinus phoxinus5.1 in (13 cm)45 gal (170 L)54–68°F (12–20°C)
European Perch
Perca fluviatilis19.7 in (50 cm)119 gal (450 L)50–72°F (10–22°C)Evelyn's cory
Corydoras evelynae1.6 in (4 cm)15 gal (55 L)72–79°F (22–26°C)
Even-Spotted squeaker
Synodontis petricola4.7 in (12 cm)45 gal (170 L)75–82°F (24–28°C)
Everglades pygmy sunfish
Elassoma evergladei1.3 in (3.4 cm)8 gal (30 L)54–82°F (12–28°C)
Exclamation-point rasbora
Boraras urophthalmoides0.6 in (1.6 cm)11 gal (40 L)73–81°F (23–27°C)Eyespot betta
Betta ocellata3.5 in (9 cm)24 gal (90 L)70–77°F (21–25°C)
Eyespot gourami
Parasphaerichthys ocellatus1.4 in (3.5 cm)12 gal (45 L)64–77°F (18–25°C)
Eyespot rasbora
Brevibora dorsiocellata1.4 in (3.5 cm)9 gal (35 L)68–77°F (20–25°C)
Fahaka puffer
Tetraodon lineatus17.7 in (45 cm)119 gal (450 L)75–82°F (24–28°C)
Fairy cory
Corydoras atropersonatus2 in (5 cm)16 gal (60 L)70–81°F (21–27°C)Fairy dwarf cichlid
Biotoecus opercularis1.6 in (4 cm)20 gal (75 L)77–86°F (25–30°C)
False bandit cory
Corydoras melini2 in (5 cm)16 gal (60 L)72–79°F (22–26°C)
False blochi cory
Corydoras delphax2.4 in (6 cm)20 gal (75 L)72–79°F (22–26°C)False network catfish
Corydoras sodalis2.2 in (5.5 cm)16 gal (60 L)72–79°F (22–26°C)
False rummynose tetra
Petitella georgiae2 in (5 cm)29 gal (110 L)72–79°F (22–26°C)
Falx betta
Betta falx2 in (5 cm)16 gal (60 L)73–81°F (23–27°C)Fanning characin
Pyrrhulina rachoviana2 in (5 cm)16 gal (60 L)68–79°F (20–26°C)
Fantail
Carassius auratus7.1 in (18 cm)20 gal (75 L)59–73°F (15–23°C)
Fathead minnow
Pimephales promelas3 in (7.5 cm)20 gal (75 L)50–72°F (10–22°C)
Featherfin cichlid
Cyathopharynx furcifer7.9 in (20 cm)119 gal (450 L)75–81°F (24–27°C)
Featherfin cichlid
Ophthalmotilapia ventralis5.9 in (15 cm)61 gal (230 L)73–81°F (23–27°C)
Featherfin squeaker
Synodontis eupterus7.9 in (20 cm)45 gal (170 L)72–81°F (22–27°C)
Fenestratus hap
Protomelas fenestratus5.5 in (14 cm)53 gal (200 L)75–82°F (24–28°C)
Fighting gaucho
Cynopoecilus melanotaenia1.8 in (4.5 cm)5 gal (20 L)64–75°F (18–24°C)
Figure Eight Puffer
Tetraodon biocellatus3.1 in (8 cm)20 gal (75 L)72–79°F (22–26°C)
Filament Barb
Dawkinsia filamentosa5.1 in (13 cm)53 gal (200 L)68–77°F (20–25°C)
Fire eel
Mastacembelus erythrotaenia39.4 in (100 cm)132 gal (500 L)75–82°F (24–28°C)
Firemouth cichlid
Thorichthys meeki5.9 in (15 cm)30 gal (115 L)73–82°F (23–28°C)Firewood catfish
Sorubimichthys planiceps59.1 in (150 cm)793 gal (3,000 L)72–82°F (22–28°C)
Five-banded barb
Desmopuntius pentazona2 in (5 cm)20 gal (75 L)73–81°F (23–27°C)
Five-bar cichlid
Neolamprologus tretocephalus5.9 in (15 cm)53 gal (200 L)73–81°F (23–27°C)
Flag cichlid
Mesonauta festivus5.9 in (15 cm)37 gal (140 L)75–82°F (24–28°C)
Flag Tetra
Hyphessobrycon heterorhabdus1.4 in (3.5 cm)16 gal (60 L)70–81°F (21–27°C)
Flagtail catfish
Dianema urostriatum4.9 in (12.5 cm)40 gal (150 L)77–82°F (25–28°C)Flagtail prochilodus
Semaprochilodus taeniurus11.8 in (30 cm)159 gal (600 L)73–82°F (23–28°C)
Flame tetra
Hyphessobrycon flammeus1 in (2.5 cm)10 gal (38 L)68–79°F (20–26°C)
Flameback cichlid
Pundamilia nyererei3.5 in (9 cm)42 gal (160 L)73–81°F (23–27°C)
Flash Pleco (L204)
Panaqolus albivermis5.1 in (13 cm)40 gal (150 L)77–84°F (25–29°C)
Flowerhorn cichlid
Amphilophus hybrid15.7 in (40 cm)90 gal (340 L)77–88°F (25–31°C)
Flying fox
Epalzeorhynchos kalopterus6.3 in (16 cm)37 gal (140 L)68–79°F (20–26°C)Foersch's betta
Betta foerschi2 in (5 cm)16 gal (60 L)73–81°F (23–27°C)
Foersch's notho
Nothobranchius foerschi2.2 in (5.5 cm)11 gal (40 L)72–79°F (22–26°C)
Forest halfbeak
Hemirhamphodon pogonognathus3.5 in (9 cm)34 gal (130 L)75–82°F (24–28°C)
Forest snakehead
Channa lucius15.7 in (40 cm)70 gal (265 L)68–86°F (20–30°C)
Fork-tailed loach
Vaillantella maassi4.7 in (12 cm)46 gal (175 L)73–84°F (23–29°C)
Forktail blue-eye
Pseudomugil furcatus2.2 in (5.5 cm)22 gal (85 L)75–82°F (24–28°C)Fourspotted toothcarp
Phallichthys quadripunctatus1.4 in (3.5 cm)11 gal (40 L)68–86°F (20–30°C)Fowler's cory
Corydoras fowleri2.8 in (7 cm)26 gal (100 L)72–79°F (22–26°C)
Frail gourami
Ctenops nobilis3.9 in (10 cm)24 gal (90 L)68–79°F (20–26°C)
Freshwater blenny
Salaria fluviatilis5.9 in (15 cm)25 gal (95 L)54–68°F (12–20°C)
Freshwater needlefish
Xenentodon cancila13.8 in (35 cm)85 gal (320 L)66–86°F (19–30°C)
Freshwater pipefish
Doryichthys martensii5.9 in (15 cm)32 gal (120 L)75–82°F (24–28°C)Freshwater sole
Brachirus panoides7.9 in (20 cm)55 gal (208 L)73–82°F (23–28°C)
Frontosa cichlid
Cyphotilapia frontosa12.6 in (32 cm)227 gal (860 L)73–81°F (23–27°C)
Fuelleborn's cichlid
Labeotropheus fuelleborni7.1 in (18 cm)46 gal (175 L)75–82°F (24–28°C)
Fusco Hap
Nimbochromis fuscotaeniatus9.8 in (25 cm)74 gal (280 L)75–82°F (24–28°C)
Gangetic climbing perch
Anabas cobojius9.8 in (25 cm)66 gal (250 L)72–86°F (22–30°C)
Gangetic leaffish
Nandus nandus7.9 in (20 cm)34 gal (130 L)72–82°F (22–28°C)Gangetic loach
Botia rostrata4.7 in (12 cm)42 gal (160 L)66–81°F (19–27°C)
Garnet tetra
Hemigrammus pulcher1.8 in (4.5 cm)20 gal (75 L)73–82°F (23–28°C)Gery's killi
Scriptaphyosemion geryi2.6 in (6.5 cm)14 gal (54 L)72–79°F (22–26°C)Giant Brochis
Brochis britskii3.5 in (9 cm)40 gal (150 L)70–79°F (21–26°C)
Giant danio
Devario aequipinnatus5.9 in (15 cm)50 gal (190 L)72–81°F (22–27°C)
Giant gourami
Osphronemus goramy27.6 in (70 cm)125 gal (475 L)68–86°F (20–30°C)
Giant kribensis
Pelvicachromis sacrimontis3.9 in (10 cm)29 gal (110 L)75–81°F (24–27°C)Giant kuhli loach
Pangio myersi3.9 in (10 cm)20 gal (75 L)72–82°F (22–28°C)
Giant Pikehead
Luciocephalus pulcher7.9 in (20 cm)36 gal (135 L)72–79°F (22–26°C)Giant raphael catfish
Megalodoras uranoscopus23.6 in (60 cm)264 gal (1,000 L)73–82°F (23–28°C)
Giant red tail gourami
Osphronemus laticlavius19.7 in (50 cm)264 gal (1,000 L)68–86°F (20–30°C)
Giant sailfin molly
Poecilia velifera5.9 in (15 cm)30 gal (113 L)75–82°F (24–28°C)
Giant snakehead
Channa micropeltes39.4 in (100 cm)528 gal (2,000 L)75–82°F (24–28°C)
Giant upside-down catfish
Synodontis batensoda11.8 in (30 cm)79 gal (300 L)72–81°F (22–27°C)
Giant whiptail catfish
Sturisomatichthys aureus7.9 in (20 cm)53 gal (200 L)73–81°F (23–27°C)
Gill's molly
Poecilia gillii3.9 in (10 cm)26 gal (100 L)72–86°F (22–30°C)
Gilt darter
Percina evides3.5 in (9 cm)29 gal (110 L)59–70°F (15–21°C)
Glass bloodfin tetra
Prionobrama filigera2.4 in (6 cm)20 gal (75 L)73–81°F (23–27°C)
Glass catfish
Kryptopterus vitreolus2.8 in (7 cm)30 gal (115 L)70–79°F (21–26°C)
Glass knifefish
Eigenmannia virescens17.7 in (45 cm)85 gal (320 L)73–82°F (23–28°C)
Glass tetra
Moenkhausia oligolepis2 in (5 cm)18 gal (70 L)75–82°F (24–28°C)
Glowlight danio
Danio choprae1.2 in (3 cm)20 gal (75 L)72–79°F (22–26°C)
Glowlight rasbora
Trigonostigma hengeli1.6 in (4 cm)12 gal (45 L)73–82°F (23–28°C)
Glowlight tetra
Hemigrammus erythrozonus1.6 in (4 cm)18 gal (70 L)75–82°F (24–28°C)
Gold barb
Barbodes semifasciolatus2.8 in (7 cm)20 gal (75 L)64–75°F (18–24°C)Gold headstander
Anostomus ternetzi6.3 in (16 cm)53 gal (200 L)73–82°F (23–28°C)
Gold laser cory
Corydoras melanotaenia2.4 in (6 cm)17 gal (65 L)68–73°F (20–23°C)
Gold nugget pleco
Baryancistrus sp. cf. xanthellus9.8 in (25 cm)55 gal (210 L)81–90°F (27–32°C)
Gold ocellatus shell dweller
Lamprologus ocellatus2.4 in (6 cm)11 gal (40 L)75–81°F (24–27°C)
Gold ring danio
Danio tinwini1.2 in (3 cm)11 gal (40 L)64–79°F (18–26°C)
Gold Saum
Andinoacara rivulatus11.8 in (30 cm)75 gal (285 L)68–75°F (20–24°C)
Goldbreast splitfin
Ilyodon furcidens3.9 in (10 cm)24 gal (90 L)64–79°F (18–26°C)
Golden dwarf barb
Pethia gelius1.6 in (4 cm)20 gal (75 L)64–75°F (18–24°C)
Golden dwarf cichlid
Nannacara anomala3.1 in (8 cm)16 gal (60 L)72–82°F (22–28°C)
Golden dwarf sucker
Otocinclus macrospilus1.4 in (3.5 cm)11 gal (40 L)70–79°F (21–26°C)
Golden Julie
Julidochromis ornatus3.1 in (8 cm)18 gal (70 L)73–81°F (23–27°C)
Golden lyretail killifish
Aphyosemion australe2.4 in (6 cm)10 gal (38 L)70–75°F (21–24°C)
Golden pencilfish
Nannostomus beckfordi2.4 in (6 cm)18 gal (70 L)70–81°F (21–27°C)
Golden pheasant
Callopanchax occidentalis3.1 in (8 cm)14 gal (54 L)68–75°F (20–24°C)Golden puffer
Auriglobus modestus4.3 in (11 cm)22 gal (85 L)73–82°F (23–28°C)Golden skiffia
Skiffia francesae2.2 in (5.5 cm)16 gal (60 L)68–79°F (20–26°C)
Golden Tetra
Hemigrammus rodwayi2.2 in (5.5 cm)20 gal (75 L)75–82°F (24–28°C)
Golden Topminnow
Fundulus chrysotus3 in (7.5 cm)22 gal (85 L)59–75°F (15–24°C)Gomez's cory
Corydoras gomezi2.4 in (6 cm)20 gal (75 L)72–79°F (22–26°C)
Goonch
Bagarius yarrelli78.7 in (200 cm)1,057 gal (4,000 L)64–75°F (18–24°C)Gossei cory
Corydoras gossei2.4 in (6 cm)20 gal (75 L)72–79°F (22–26°C)Graceful rasbora
Trigonopoma gracile2 in (5 cm)16 gal (60 L)72–79°F (22–26°C)
Grant's peacock
Aulonocara stuartgranti5.1 in (13 cm)74 gal (280 L)75–82°F (24–28°C)
Granulated synodontis
Synodontis granulosus10.6 in (27 cm)79 gal (300 L)73–81°F (23–27°C)
Greater scissortail
Rasbora caudimaculata5.1 in (13 cm)53 gal (200 L)68–79°F (20–26°C)
Green chromide
Etroplus suratensis11.8 in (30 cm)145 gal (550 L)68–86°F (20–30°C)Green fire tetra
Aphyocharax rathbuni2 in (5 cm)20 gal (75 L)72–79°F (22–26°C)Green lizard tetra
Iguanodectes spilurus3.5 in (9 cm)32 gal (120 L)73–82°F (23–28°C)
Green neon rasbora
Microdevario kubotai0.8 in (2 cm)12 gal (45 L)72–79°F (22–26°C)
Green neon tetra
Paracheirodon simulans1 in (2.5 cm)15 gal (55 L)72–86°F (22–30°C)Green panchax
Aplocheilus blockii2 in (5 cm)11 gal (40 L)72–82°F (22–28°C)
Green Phantom Pleco (L200)
Hemiancistrus subviridis7.1 in (18 cm)53 gal (200 L)79–86°F (26–30°C)
Green spotted puffer
Dichotomyctere nigroviridis5.9 in (15 cm)32 gal (120 L)75–82°F (24–28°C)
Green swordtail
Xiphophorus hellerii5.9 in (15 cm)24 gal (90 L)68–82°F (20–28°C)
Green tiger loach
Syncrossus hymenophysa8.3 in (21 cm)40 gal (150 L)77–86°F (25–30°C)Guapore cory
Corydoras guapore2 in (5 cm)16 gal (60 L)72–82°F (22–28°C)
Guenther's Mouthbrooder
Chromidotilapia guentheri5.9 in (15 cm)30 gal (115 L)75–81°F (24–27°C)
Gulf saratoga
Scleropages jardinii35.4 in (90 cm)317 gal (1,200 L)75–86°F (24–30°C)
Gulper catfish
Asterophysus batrachus9.8 in (25 cm)95 gal (360 L)72–82°F (22–28°C)
Guntea loach
Lepidocephalichthys guntea4.7 in (12 cm)24 gal (90 L)64–82°F (18–28°C)
Gunther's nothobranch
Nothobranchius guentheri2.4 in (6 cm)11 gal (40 L)72–77°F (22–25°C)
Guppy
Poecilia reticulata2.4 in (6 cm)13 gal (50 L)64–82°F (18–28°C)
Hairy Puffer
Tetraodon baileyi5.5 in (14 cm)26 gal (100 L)73–81°F (23–27°C)
Half-banded kuhli loach
Pangio semicincta3.9 in (10 cm)28 gal (105 L)70–79°F (21–26°C)
Half-banded spiny eel
Macrognathus circumcinctus7.9 in (20 cm)57 gal (215 L)75–81°F (24–27°C)
Hara cichlid
Cynotilapia zebroides3.9 in (10 cm)53 gal (200 L)75–82°F (24–28°C)Harlequin lancer catfish
Bagroides melapterus11.8 in (30 cm)120 gal (455 L)75–81°F (24–27°C)
Harlequin rasbora
Trigonostigma heteromorpha2 in (5 cm)15 gal (55 L)72–82°F (22–28°C)
Harrison's pencilfish
Nannostomus harrisoni2.2 in (5.5 cm)16 gal (60 L)73–82°F (23–28°C)
Head-and-taillight tetra
Hemigrammus ocellifer1.8 in (4.5 cm)17 gal (65 L)75–82°F (24–28°C)
Heckel discus
Symphysodon discus7.1 in (18 cm)75 gal (284 L)82–88°F (28–31°C)Hendra betta
Betta hendra1.8 in (4.5 cm)11 gal (40 L)73–81°F (23–27°C)
Hingemouth
Phractolaemus ansorgii9.8 in (25 cm)36 gal (135 L)73–82°F (23–28°C)
Hippo Point Salmon
Ptyochromis sp.5.1 in (13 cm)30 gal (115 L)73–82°F (23–28°C)
Hockeystick pencilfish
Nannostomus eques1.4 in (3.5 cm)15 gal (55 L)72–82°F (22–28°C)
Hognosed brochis
Brochis multiradiatus3.5 in (9 cm)40 gal (150 L)70–79°F (21–26°C)
Honduran red point cichlid
Amatitlania siquia3.9 in (10 cm)30 gal (114 L)73–82°F (23–28°C)Honey blue-eye
Pseudomugil mellis1.4 in (3.5 cm)11 gal (40 L)68–82°F (20–28°C)
Honey gourami
Trichogaster chuna2 in (5 cm)20 gal (75 L)72–82°F (22–28°C)
Hongsloi dwarf cichlid
Apistogramma hongsloi3.1 in (8 cm)20 gal (75 L)73–84°F (23–29°C)
Hoplo catfish
Hoplosternum littorale7.9 in (20 cm)40 gal (150 L)72–81°F (22–27°C)
Horseface loach
Acantopsis dialuzona7.9 in (20 cm)55 gal (210 L)61–75°F (16–24°C)
Horseman cory
Corydoras eques2 in (5 cm)16 gal (60 L)72–79°F (22–26°C)
Horseshoe betta
Betta hipposideros3.1 in (8 cm)24 gal (90 L)73–81°F (23–27°C)
Hujeta gar
Ctenolucius hujeta9.8 in (25 cm)55 gal (210 L)72–82°F (22–28°C)Hummingbird tetra
Trochilocharax ornatus0.8 in (2 cm)12 gal (45 L)73–81°F (23–27°C)
Humpback Puffer
Pao palembangensis7.9 in (20 cm)32 gal (120 L)75–82°F (24–28°C)
Humpbacked limia
Limia nigrofasciata2.4 in (6 cm)20 gal (75 L)72–82°F (22–28°C)
Humphead glassfish
Parambassis pulcinella3.9 in (10 cm)32 gal (120 L)73–81°F (23–27°C)Ice blue zebra
Metriaclima greshakei5.5 in (14 cm)55 gal (210 L)75–82°F (24–28°C)
Imitator cory
Corydoras imitator2.6 in (6.5 cm)21 gal (80 L)72–79°F (22–26°C)Inca dwarf cichlid
Apistogramma baenschi2.8 in (7 cm)20 gal (75 L)73–82°F (23–28°C)
Indian glassy fish
Parambassis ranga3.1 in (8 cm)20 gal (75 L)68–86°F (20–30°C)
Indonesian tigerfish
Datnioides microlepis19.7 in (50 cm)180 gal (680 L)68–82°F (20–28°C)
Iridescent shark
Pangasianodon hypophthalmus39.4 in (100 cm)528 gal (2,000 L)72–79°F (22–26°C)
Jack Dempsey
Rocio octofasciata9.8 in (25 cm)55 gal (208 L)72–82°F (22–28°C)
Jae barb
Enteromius jae1.6 in (4 cm)16 gal (60 L)68–77°F (20–25°C)Jaguar catfish
Liosomadoras oncinus9.1 in (23 cm)65 gal (245 L)72–82°F (22–28°C)
Jaguar cichlid
Parachromis managuensis15.7 in (40 cm)119 gal (450 L)75–82°F (24–28°C)
January tetra
Hemigrammus hyanuary1.6 in (4 cm)17 gal (65 L)73–81°F (23–27°C)
Jau catfish
Zungaro zungaro55.1 in (140 cm)793 gal (3,000 L)72–82°F (22–28°C)
Java loach
Pangio oblonga3.1 in (8 cm)25 gal (95 L)70–79°F (21–26°C)
Javanese ricefish
Oryzias javanicus1.4 in (3.5 cm)11 gal (40 L)75–84°F (24–29°C)
Jellybean tetra
Ladigesia roloffi1.2 in (3 cm)10 gal (37 L)72–81°F (22–27°C)
Jewel cichlid
Hemichromis bimaculatus5.9 in (15 cm)30 gal (115 L)72–82°F (22–28°C)Jeweled splitfin
Xenotoca variata2.8 in (7 cm)20 gal (75 L)64–81°F (18–27°C)
Johanni cichlid
Melanochromis johannii4.7 in (12 cm)42 gal (160 L)73–81°F (23–27°C)
Julii cory
Corydoras julii2.2 in (5.5 cm)20 gal (75 L)68–79°F (20–26°C)
Kadlec's notho
Nothobranchius kadleci2.4 in (6 cm)11 gal (40 L)72–79°F (22–26°C)
Kaligono
Nimbochromis polystigma10.2 in (26 cm)74 gal (280 L)75–82°F (24–28°C)
Kenyi cichlid
Maylandia lombardoi5.5 in (14 cm)53 gal (200 L)75–82°F (24–28°C)
Keyhole cichlid
Cleithracara maronii4.3 in (11 cm)25 gal (95 L)70–82°F (21–28°C)
King tiger pleco (L066)
Hypancistrus sp. L0665.1 in (13 cm)40 gal (150 L)79–84°F (26–29°C)
Kissing gourami
Helostoma temminckii9.8 in (25 cm)36 gal (135 L)72–86°F (22–30°C)
Kissing prochilodus
Semaprochilodus insignis13.8 in (35 cm)135 gal (510 L)73–84°F (23–29°C)
Knife livebearer
Alfaro cultratus3 in (7.6 cm)32 gal (120 L)75–82°F (24–28°C)
Knight goby
Stigmatogobius sadanundio3.5 in (9 cm)21 gal (80 L)68–79°F (20–26°C)
Koi
Cyprinus rubrofuscus23.6 in (60 cm)264 gal (1,000 L)39–81°F (4–27°C)
Krabi mouthbrooder
Betta simplex2.4 in (6 cm)16 gal (60 L)73–82°F (23–28°C)
Kribensis
Pelvicachromis pulcher3.9 in (10 cm)20 gal (75 L)75–81°F (24–27°C)
Kuhli loach
Pangio kuhlii3.9 in (10 cm)20 gal (75 L)72–82°F (22–28°C)
Lake Inle danio
Devario auropurpureus3.1 in (8 cm)24 gal (90 L)64–77°F (18–25°C)
Lake Kurumoi rainbowfish
Melanotaenia parva3.1 in (8 cm)29 gal (110 L)72–79°F (22–26°C)
Lake Kutubu rainbowfish
Melanotaenia lacustris4.3 in (11 cm)29 gal (110 L)68–77°F (20–25°C)
Lake Malawi syno
Synodontis njassae7.5 in (19 cm)40 gal (150 L)73–82°F (23–28°C)
Lake Tebera rainbowfish
Melanotaenia herbertaxelrodi3.5 in (9 cm)25 gal (95 L)68–79°F (20–26°C)
Lake Wanam rainbowfish
Glossolepis wanamensis3.9 in (10 cm)25 gal (95 L)77–86°F (25–30°C)
Largescale four-eyed fish
Anableps anableps11.8 in (30 cm)70 gal (265 L)77–88°F (25–31°C)
Least killifish
Heterandria formosa1.4 in (3.5 cm)5 gal (20 L)68–79°F (20–26°C)
Leconte's loach
Yasuhikotakia lecontei5.9 in (15 cm)53 gal (200 L)75–82°F (24–28°C)
Lemon cichlid
Neolamprologus leleupi4.5 in (11.5 cm)20 gal (75 L)73–81°F (23–27°C)
Lemon tetra
Hyphessobrycon pulchripinnis2 in (5 cm)17 gal (65 L)72–82°F (22–28°C)
Leopard bush fish
Ctenopoma acutirostre6.3 in (16 cm)40 gal (150 L)68–82°F (20–28°C)Leopard Cactus Pleco (L114)
Pseudacanthicus cf. leopardus13.8 in (35 cm)106 gal (400 L)81–88°F (27–31°C)
Leopard cory
Corydoras leopardus2.8 in (7 cm)24 gal (90 L)72–79°F (22–26°C)
Leopard sailfin pleco
Pterygoplichthys gibbiceps18.9 in (48 cm)100 gal (380 L)72–86°F (22–30°C)
Lesser bleeding heart tetra
Hyphessobrycon socolofi2.2 in (5.6 cm)24 gal (90 L)73–82°F (23–28°C)Lesser spiny eel
Macrognathus aculeatus15 in (38 cm)85 gal (320 L)73–82°F (23–28°C)
Liberty molly
Poecilia salvatoris3.9 in (10 cm)24 gal (90 L)72–82°F (22–28°C)
Licorice gourami
Parosphromenus deissneri1.5 in (3.8 cm)11 gal (40 L)72–82°F (22–28°C)Lined barb
Striuntius lineatus2 in (5 cm)20 gal (75 L)73–81°F (23–27°C)Linke's licorice gourami
Parosphromenus linkei1.4 in (3.5 cm)11 gal (40 L)72–82°F (22–28°C)
Lionhead
Carassius auratus7.1 in (18 cm)25 gal (95 L)61–75°F (16–24°C)
Livid betta
Betta livida1.4 in (3.6 cm)11 gal (40 L)73–81°F (23–27°C)
Livingston's cichlid
Nimbochromis livingstonii9.8 in (25 cm)74 gal (280 L)75–82°F (24–28°C)Loach catfish
Aspidoras rochai1.7 in (4.4 cm)15 gal (55 L)70–77°F (21–25°C)Long nosed arched cory
Corydoras narcissus2.8 in (7 cm)30 gal (115 L)73–77°F (23–25°C)
Long-fin tetra
Brycinus longipinnis4.9 in (12.5 cm)50 gal (190 L)72–79°F (22–26°C)
Longnose distichodus
Distichodus lusosso15 in (38 cm)119 gal (450 L)72–81°F (22–27°C)Loreto cory
Corydoras loretoensis2 in (5 cm)16 gal (60 L)72–77°F (22–25°C)
Loreto tetra
Hyphessobrycon loretoensis1.4 in (3.5 cm)16 gal (60 L)72–81°F (22–27°C)
Lyretail cichlid
Neolamprologus brichardi3.9 in (10 cm)29 gal (110 L)73–81°F (23–27°C)
Macmaster's dwarf cichlid
Apistogramma macmasteri2.4 in (6 cm)20 gal (75 L)75–82°F (24–28°C)
Madagascar rainbowfish
Bedotia madagascariensis3.3 in (8.5 cm)45 gal (170 L)73–90°F (23–32°C)
Mafia killifish
Nothobranchius korthausae2 in (5 cm)10 gal (38 L)72–79°F (22–26°C)
Magnificent killifish
Hypsolebias magnificus2 in (5 cm)10 gal (38 L)72–79°F (22–26°C)
Mahachai betta
Betta mahachaiensis2.4 in (6 cm)10 gal (38 L)72–82°F (22–28°C)
Malabar danio
Devario malabaricus5.1 in (13 cm)48 gal (180 L)64–77°F (18–25°C)Malawi barracuda
Rhamphochromis cf. macrophthalmus9.8 in (25 cm)79 gal (300 L)73–81°F (23–27°C)
Malawi eyebiter
Dimidiochromis compressiceps9.8 in (25 cm)66 gal (250 L)73–82°F (23–28°C)
Malawi sand diver
Fossorochromis rostratus11 in (28 cm)119 gal (450 L)75–82°F (24–28°C)
Malay combtail gourami
Belontia hasselti7.9 in (20 cm)45 gal (170 L)70–79°F (21–26°C)
Malayan leaf fish
Pristolepis fasciata7.9 in (20 cm)40 gal (150 L)73–82°F (23–28°C)
Marbled bichir
Polypterus palmas13.8 in (35 cm)53 gal (200 L)75–82°F (24–28°C)
Marbled goby
Oxyeleotris marmorata23.6 in (60 cm)145 gal (550 L)72–82°F (22–28°C)
Marbled hatchetfish
Carnegiella strigata1.6 in (4 cm)32 gal (120 L)68–82°F (20–28°C)
Marbled headstander
Abramites hypselonotus5.5 in (14 cm)70 gal (265 L)68–86°F (20–30°C)
Marbled sailfin pim
Leiarius marmoratus39.4 in (100 cm)528 gal (2,000 L)72–79°F (22–26°C)Marbled spiny eel
Mastacembelus favus19.7 in (50 cm)119 gal (450 L)75–82°F (24–28°C)
Marlier's julie
Julidochromis marlieri5.9 in (15 cm)29 gal (110 L)73–81°F (23–27°C)
Mascara Barb
Dawkinsia assimilis4.7 in (12 cm)53 gal (200 L)66–77°F (19–25°C)
Masked cory
Corydoras metae2 in (5 cm)15 gal (55 L)70–79°F (21–26°C)
Masked julie
Julidochromis transcriptus2.8 in (7 cm)20 gal (75 L)75–81°F (24–27°C)
Mayan cichlid
Mayaheros urophthalmus11.8 in (30 cm)90 gal (340 L)75–86°F (24–30°C)
Mayan Tetra
Hyphessobrycon compressus1.8 in (4.5 cm)16 gal (60 L)68–79°F (20–26°C)
Mbu puffer
Tetraodon mbu26.4 in (67 cm)396 gal (1,500 L)75–82°F (24–28°C)
Medaka
Oryzias latipes1.4 in (3.5 cm)9 gal (35 L)61–72°F (16–22°C)Medusa Pleco (L034)
Ancistrus ranunculus5.9 in (15 cm)40 gal (150 L)79–86°F (26–30°C)Mega Clown Pleco (L340)
Hypancistrus sp. L3403.5 in (9 cm)20 gal (75 L)79–86°F (26–30°C)
Mekong tiger perch
Datnioides undecimradiatus15.7 in (40 cm)119 gal (450 L)75–82°F (24–28°C)
Melanzona Guppy
Poecilia parae2 in (5 cm)15 gal (55 L)75–82°F (24–28°C)
Melon Barb
Haludaria fasciata2.8 in (7 cm)40 gal (150 L)72–79°F (22–26°C)
Merry widow livebearer
Phallichthys amates2.5 in (6.4 cm)16 gal (60 L)72–86°F (22–30°C)
Metallic livebearer
Girardinus metallicus2.4 in (6 cm)11 gal (40 L)72–81°F (22–27°C)Micro rasbora
Boraras micros0.6 in (1.5 cm)8 gal (30 L)72–79°F (22–26°C)
Midas Cichlid
Amphilophus citrinellus13.8 in (35 cm)79 gal (300 L)70–79°F (21–26°C)Midnight catfish
Auchenipterichthys coracoideus4.3 in (11 cm)20 gal (75 L)72–77°F (22–25°C)
Miguelito cory
Corydoras virginiae2.4 in (6 cm)20 gal (75 L)72–79°F (22–26°C)
Montezuma swordtail
Xiphophorus montezumae5.5 in (14 cm)32 gal (120 L)68–79°F (20–26°C)
Moonlight gourami
Trichopodus microlepis5.9 in (15 cm)30 gal (115 L)77–86°F (25–30°C)
Moore's lamprologus
Variabilichromis moorii4.3 in (11 cm)53 gal (200 L)75–81°F (24–27°C)
Mosaic cory
Corydoras haraldschultzi2.8 in (7 cm)20 gal (75 L)75–82°F (24–28°C)
Moustached danio
Danio dangila5.1 in (13 cm)32 gal (120 L)68–79°F (20–26°C)
Multie shell dweller
Neolamprologus multifasciatus1.8 in (4.5 cm)20 gal (75 L)75–81°F (24–27°C)
Nain dwarf cory
Corydoras nanus1.8 in (4.5 cm)16 gal (60 L)72–79°F (22–26°C)Nano cory
Corydoras gracilis1.4 in (3.5 cm)12 gal (45 L)72–79°F (22–26°C)
Napo cory
Corydoras napoensis2 in (5 cm)16 gal (60 L)72–79°F (22–26°C)Narrow hatchetfish
Triportheus angulatus9.8 in (25 cm)79 gal (300 L)73–82°F (23–28°C)
Nasuta featherfin
Ophthalmotilapia nasuta7.1 in (18 cm)79 gal (300 L)75–81°F (24–27°C)
Neon rainbowfish
Melanotaenia praecox3.1 in (8 cm)29 gal (110 L)73–82°F (23–28°C)
Neon tetra
Paracheirodon innesi1.5 in (3.8 cm)11 gal (40 L)70–77°F (21–25°C)
New Guinea rainbowfish
Melanotaenia affinis4.7 in (12 cm)30 gal (115 L)68–86°F (20–30°C)
Nicaragua cichlid
Hypsophrys nicaraguensis9.8 in (25 cm)75 gal (285 L)73–82°F (23–28°C)
Niger tetra
Arnoldichthys spilopterus3.9 in (10 cm)50 gal (190 L)75–81°F (24–27°C)Nijssen's cory
Corydoras nijsseni1.8 in (4.5 cm)16 gal (60 L)72–79°F (22–26°C)
Nile bichir
Polypterus bichir27.6 in (70 cm)185 gal (700 L)77–84°F (25–29°C)
Norman's lampeye
Poropanchax normani1.6 in (4 cm)20 gal (75 L)72–79°F (22–26°C)
Northern mountain swordtail
Xiphophorus nezahualcoyotl3.5 in (9 cm)29 gal (110 L)68–79°F (20–26°C)
Northern Studfish
Fundulus catenatus5.9 in (15 cm)37 gal (140 L)59–77°F (15–25°C)
Ocellate river stingray
Potamotrygon motoro19.7 in (50 cm)264 gal (1,000 L)75–82°F (24–28°C)
Ocellated kribensis
Pelvicachromis subocellatus3.9 in (10 cm)21 gal (80 L)75–81°F (24–27°C)
Ocellated snakehead
Channa pleurophthalma15.7 in (40 cm)70 gal (265 L)75–82°F (24–28°C)
Ocellated squeaker
Synodontis ocellifer7.9 in (20 cm)53 gal (200 L)73–81°F (23–27°C)
Odessa Barb
Pethia padamya1.8 in (4.5 cm)20 gal (75 L)61–77°F (16–25°C)
Ogowe killifish
Aphyosemion ogoense2 in (5 cm)11 gal (40 L)64–73°F (18–23°C)Oiapoque cory
Corydoras oiapoquensis2.2 in (5.5 cm)20 gal (75 L)73–79°F (23–26°C)Oil catfish
Centromochlus perugiae2.4 in (6 cm)15 gal (55 L)75–82°F (24–28°C)One-lined Pencilfish
Nannostomus unifasciatus1.6 in (4 cm)17 gal (65 L)73–82°F (23–28°C)One-spot betta
Betta unimaculata4.5 in (11.5 cm)29 gal (110 L)70–79°F (21–26°C)
One-spot synodontis
Synodontis notatus9.8 in (25 cm)53 gal (200 L)72–81°F (22–27°C)
Oranda
Carassius auratus9.8 in (25 cm)30 gal (114 L)61–73°F (16–23°C)
Orange chromide
Etroplus maculatus3.9 in (10 cm)55 gal (210 L)68–82°F (20–28°C)
Orange Hatchet Danio
Laubuka dadiburjori1.2 in (3 cm)13 gal (50 L)68–75°F (20–24°C)
Orange-finned danio
Danio kyathit2 in (5 cm)20 gal (75 L)68–79°F (20–26°C)
Orange-spotted snakehead
Channa aurantimaculata15.7 in (40 cm)119 gal (450 L)59–77°F (15–25°C)
Orangethroat darter
Etheostoma spectabile2.8 in (7 cm)25 gal (95 L)59–68°F (15–20°C)Orinoco Angel Pleco (L201)
Hypancistrus sp. L2015.9 in (15 cm)30 gal (115 L)79–86°F (26–30°C)
Ornate bichir
Polypterus ornatipinnis21.7 in (55 cm)172 gal (650 L)77–82°F (25–28°C)
Ornate bushfish
Microctenopoma ansorgii3.1 in (8 cm)20 gal (75 L)73–81°F (23–27°C)Ornate cory
Corydoras ornatus2.8 in (7 cm)24 gal (90 L)72–79°F (22–26°C)
Ornate paradisefish
Malpulutta kretseri2 in (5 cm)12 gal (45 L)72–82°F (22–28°C)
Ornate Pimelodus
Pimelodus ornatus12.2 in (31 cm)65 gal (245 L)75–82°F (24–28°C)
Ornate rainbowfish
Rhadinocentrus ornatus2.4 in (6 cm)20 gal (75 L)64–82°F (18–28°C)Ornate shell dweller
Lamprologus ornatipinnis2.4 in (6 cm)16 gal (60 L)75–81°F (24–27°C)
Ornate tetra
Hyphessobrycon bentosi1.8 in (4.5 cm)20 gal (75 L)72–82°F (22–28°C)
Oscar
Astronotus ocellatus13.8 in (35 cm)95 gal (360 L)68–82°F (20–28°C)
Pacific blue-eye
Pseudomugil signifer2.8 in (7 cm)25 gal (95 L)68–79°F (20–26°C)
Pale usisya aulonocara
Aulonocara steveni5.5 in (14 cm)63 gal (240 L)75–82°F (24–28°C)Palmqvist's notho
Nothobranchius palmqvisti2 in (5 cm)11 gal (40 L)72–81°F (22–27°C)Panama hoplo
Hoplosternum punctatum3.1 in (8 cm)30 gal (115 L)72–79°F (22–26°C)
Panda cory
Corydoras panda2 in (5 cm)15 gal (55 L)72–77°F (22–25°C)
Panda dwarf cichlid
Apistogramma nijsseni3.3 in (8.5 cm)18 gal (70 L)75–82°F (24–28°C)
Panda Garra
Garra flavatra3.5 in (9 cm)26 gal (100 L)72–81°F (22–27°C)Panda loach
Yaoshania pachychilus2.8 in (7 cm)20 gal (75 L)64–75°F (18–24°C)
Panduro apisto
Apistogramma panduro3 in (7.5 cm)20 gal (75 L)75–82°F (24–28°C)
Pantano cichlid
Cincelichthys pearsei11.8 in (30 cm)119 gal (450 L)77–86°F (25–30°C)
Paradise fish
Macropodus opercularis3.1 in (8 cm)25 gal (95 L)50–72°F (10–22°C)
Paradise Threadfin
Polynemus paradiseus9.8 in (25 cm)75 gal (285 L)75–82°F (24–28°C)
Paraguay Eartheater
Gymnogeophagus balzanii5.5 in (14 cm)37 gal (140 L)70–77°F (21–25°C)
Parkinson's rainbowfish
Melanotaenia parkinsoni4.3 in (11 cm)53 gal (200 L)75–82°F (24–28°C)
Paroon shark
Pangasius sanitwongsei118.1 in (300 cm)2,113 gal (8,000 L)72–79°F (22–26°C)Paska's blue-eye
Pseudomugil paskai1.4 in (3.5 cm)11 gal (40 L)72–79°F (22–26°C)Pastaza cory
Corydoras pastazensis2.8 in (7 cm)22 gal (85 L)72–82°F (22–28°C)Patoti betta
Betta patoti3.9 in (10 cm)29 gal (110 L)72–81°F (22–27°C)
Patrizi's notho
Nothobranchius patrizii2.2 in (5.5 cm)11 gal (40 L)72–79°F (22–26°C)
Payara
Hydrolycus armatus35 in (89 cm)1,057 gal (4,000 L)75–82°F (24–28°C)
Peacock gudgeon
Tateurndina ocellicauda3 in (7.5 cm)20 gal (75 L)72–79°F (22–26°C)
Peacock snakehead
Channa pulchra11.8 in (30 cm)74 gal (280 L)61–79°F (16–26°C)
Peacock Spiny Eel
Macrognathus siamensis11.8 in (30 cm)70 gal (265 L)75–82°F (24–28°C)
Pearl danio
Danio albolineatus2.4 in (6 cm)18 gal (70 L)61–77°F (16–25°C)
Pearl eartheater
Geophagus brasiliensis11 in (28 cm)75 gal (284 L)68–79°F (20–26°C)
Pearl gourami
Trichopodus leerii4.7 in (12 cm)30 gal (115 L)75–86°F (24–30°C)
Pearl of Likoma
Melanochromis joanjohnsonae3.9 in (10 cm)45 gal (170 L)75–81°F (24–27°C)
Pearlscale
Carassius auratus7.1 in (18 cm)25 gal (95 L)64–75°F (18–24°C)
Pearlscale Cichlid
Herichthys carpintis11.8 in (30 cm)55 gal (210 L)75–79°F (24–26°C)
Penguin tetra
Thayeria boehlkei2.6 in (6.5 cm)20 gal (75 L)72–82°F (22–28°C)
Peppered cory
Corydoras paleatus2.8 in (7 cm)21 gal (80 L)72–79°F (22–26°C)
Persephone betta
Betta persephone1.4 in (3.5 cm)11 gal (40 L)73–81°F (23–27°C)Persian toothcarp
Paraphanius mento2.6 in (6.5 cm)29 gal (110 L)59–86°F (15–30°C)
Peru black cory
Corydoras semiaquilus2.6 in (6.5 cm)24 gal (90 L)72–79°F (22–26°C)
Perugia's limia
Limia perugiae2.8 in (7 cm)20 gal (75 L)72–82°F (22–28°C)
Peruvian tetra
Hyphessobrycon peruvianus1.6 in (4 cm)16 gal (60 L)72–81°F (22–27°C)
Peter’s elephantnose
Gnathonemus petersii8.9 in (22.5 cm)66 gal (250 L)73–82°F (23–28°C)Petrotilapia
Petrotilapia sp.7.1 in (18 cm)119 gal (450 L)75–81°F (24–27°C)
Phoenix rasbora
Boraras merah0.8 in (2 cm)11 gal (40 L)72–81°F (22–27°C)
Pi betta
Betta pi3.5 in (9 cm)26 gal (100 L)73–81°F (23–27°C)
Pike topminnow
Belonesox belizanus7.9 in (20 cm)44 gal (165 L)73–82°F (23–28°C)
Pink cory
Corydoras axelrodi2 in (5 cm)16 gal (60 L)72–79°F (22–26°C)
Pink-tail chalceus
Chalceus macrolepidotus9.8 in (25 cm)63 gal (240 L)73–82°F (23–28°C)
Pinstripe damba cichlid
Paretroplus menarambo9.8 in (25 cm)95 gal (360 L)79–84°F (26–29°C)
Piraiba
Brachyplatystoma filamentosum118.1 in (300 cm)2,642 gal (10,000 L)72–82°F (22–28°C)
Playfair's panchax
Pachypanchax playfairii3.9 in (10 cm)20 gal (75 L)72–77°F (22–25°C)Plumed lyretail
Fundulopanchax filamentosus2.4 in (6 cm)20 gal (75 L)68–75°F (20–24°C)
Polka dot syno
Synodontis angelicus11.8 in (30 cm)55 gal (210 L)75–82°F (24–28°C)
Polka-Dot Loach
Botia kubotai5.9 in (15 cm)42 gal (160 L)72–82°F (22–28°C)Poll's synodontis
Synodontis polli7.1 in (18 cm)50 gal (190 L)72–79°F (22–26°C)Popondetta blue-eye
Pseudomugil connieae2 in (5 cm)11 gal (40 L)75–82°F (24–28°C)
Porthole catfish
Dianema longibarbis3.9 in (10 cm)26 gal (100 L)75–82°F (24–28°C)
Porthole livebearer
Poeciliopsis gracilis3.5 in (9 cm)11 gal (40 L)72–82°F (22–28°C)Powder blue cichlid
Chindongo socolofi4.7 in (12 cm)53 gal (200 L)75–81°F (24–27°C)Pretty cory
Corydoras pulcher2.6 in (6.5 cm)24 gal (90 L)75–82°F (24–28°C)Prima betta
Betta prima2 in (5 cm)16 gal (60 L)73–81°F (23–27°C)Prionotos cory
Scleromystax prionotos2.4 in (6 cm)29 gal (110 L)68–77°F (20–25°C)
Pugnax Betta
Betta pugnax2.8 in (7 cm)16 gal (60 L)72–82°F (22–28°C)Pulchra betta
Betta pulchra2.4 in (6 cm)20 gal (75 L)73–81°F (23–27°C)
Pumpkinseed Sunfish
Lepomis gibbosus9.8 in (25 cm)70 gal (265 L)41–73°F (5–23°C)
Purple pencilfish
Nannostomus rubrocaudatus1.2 in (3 cm)20 gal (75 L)75–82°F (24–28°C)
Purple spotted gudgeon
Mogurnda mogurnda7.9 in (20 cm)40 gal (150 L)68–79°F (20–26°C)Purple tetra
Hyphessobrycon metae1.8 in (4.5 cm)20 gal (75 L)73–82°F (23–28°C)
Pygmy cory
Corydoras pygmaeus1.3 in (3.3 cm)13 gal (50 L)72–79°F (22–26°C)Pygmy driftwood catfish
Trachelyichthys exilis3.1 in (8 cm)21 gal (80 L)72–77°F (22–25°C)
Pygmy gourami
Trichopsis pumila1.6 in (4 cm)15 gal (55 L)72–82°F (22–28°C)
Pygmy hatchetfish
Carnegiella myersi1 in (2.5 cm)26 gal (100 L)73–79°F (23–26°C)
Pygmy swordtail
Xiphophorus pygmaeus1.6 in (4 cm)11 gal (40 L)75–82°F (24–28°C)Pyjama synodontis
Synodontis flavitaeniatus7.1 in (18 cm)53 gal (200 L)75–81°F (24–27°C)Queen Arabesque Pleco (L260)
Hypancistrus sp. L2603.9 in (10 cm)20 gal (75 L)79–86°F (26–30°C)Queen danio
Devario regina3.1 in (8 cm)30 gal (115 L)68–79°F (20–26°C)
Rainbow Cichlid
Herotilapia multispinosa6.3 in (16 cm)26 gal (100 L)72–82°F (22–28°C)
Rainbow darter
Etheostoma caeruleum2.8 in (7 cm)25 gal (95 L)50–64°F (10–18°C)Rainbow emperor tetra
Nematobrycon lacortei2 in (5 cm)20 gal (75 L)73–81°F (23–27°C)
Rainbow goodeid
Characodon lateralis2.4 in (6 cm)15 gal (57 L)61–75°F (16–24°C)
Rainbow shark
Epalzeorhynchos frenatum5.9 in (15 cm)32 gal (120 L)68–79°F (20–26°C)
Rainbow shiner
Notropis chrosomus3.1 in (8 cm)20 gal (75 L)50–72°F (10–22°C)
Rainbow snakehead
Channa bleheri7.9 in (20 cm)42 gal (160 L)59–77°F (15–25°C)
Rainbow stiphodon
Stiphodon ornatus2.6 in (6.5 cm)13 gal (50 L)68–79°F (20–26°C)Raja Betta
Betta raja2.8 in (7 cm)26 gal (100 L)72–81°F (22–27°C)
Ranchu
Carassius auratus7.1 in (18 cm)25 gal (95 L)61–75°F (16–24°C)Red cheek tropheops
Tropheops sp. 'Red Cheek'5.1 in (13 cm)74 gal (280 L)75–81°F (24–27°C)
Red devil cichlid
Amphilophus labiatus13.8 in (35 cm)75 gal (284 L)75–79°F (24–26°C)
Red dwarf rasbora
Microrasbora rubescens1.2 in (3 cm)12 gal (45 L)68–77°F (20–25°C)
Red empress cichlid
Protomelas taeniolatus7.9 in (20 cm)53 gal (200 L)75–82°F (24–28°C)
Red eye tetra
Moenkhausia sanctaefilomenae2.8 in (7 cm)28 gal (105 L)72–79°F (22–26°C)
Red fin hap
Copadichromis borleyi7.9 in (20 cm)79 gal (300 L)77–84°F (25–29°C)
Red flush tetra
Hemigrammus stictus2.4 in (6 cm)20 gal (75 L)73–81°F (23–27°C)
Red head Tapajos
Geophagus pyrocephalus6.3 in (16 cm)79 gal (300 L)79–86°F (26–30°C)
Red hillstream loach
Beaufortia leveretti3.1 in (8 cm)24 gal (90 L)64–75°F (18–24°C)
Red hump eartheater
Geophagus steindachneri5.9 in (15 cm)53 gal (200 L)72–82°F (22–28°C)
Red lizard whiptail
Rineloricaria lanceolata3.9 in (10 cm)24 gal (90 L)77–82°F (25–28°C)
Red melon dario
Dario hysginon1.2 in (3 cm)11 gal (40 L)72–79°F (22–26°C)Red neon blue-eye
Pseudomugil luminatus1.4 in (3.5 cm)11 gal (40 L)72–81°F (22–27°C)
Red phantom tetra
Hyphessobrycon sweglesi1.6 in (4 cm)15 gal (55 L)72–82°F (22–28°C)
Red rainbowfish
Glossolepis incisus5.5 in (14 cm)34 gal (130 L)72–77°F (22–25°C)
Red shiner
Cyprinella lutrensis3.5 in (9 cm)36 gal (135 L)57–77°F (14–25°C)
Red tail barracuda
Acestrorhynchus falcatus11.8 in (30 cm)100 gal (380 L)72–82°F (22–28°C)Red tiger motaguense
Parachromis motaguensis11.8 in (30 cm)100 gal (380 L)75–82°F (24–28°C)
Red wolf fish
Erythrinus erythrinus7.9 in (20 cm)40 gal (150 L)72–79°F (22–26°C)
Red zebra cichlid
Metriaclima estherae3.9 in (10 cm)45 gal (170 L)75–82°F (24–28°C)
Red-bellied pacu
Piaractus brachypomus34.6 in (88 cm)1,057 gal (4,000 L)73–82°F (23–28°C)
Red-bellied Piranha
Pygocentrus nattereri12.6 in (32 cm)160 gal (605 L)75–82°F (24–28°C)
Red-chinned panchax
Epiplatys dageti1.8 in (4.5 cm)20 gal (75 L)70–75°F (21–24°C)
Red-nosed Madagascar cichlid
Paretroplus kieneri6.3 in (16 cm)74 gal (280 L)75–82°F (24–28°C)Red-seam Killifish
Aphyosemion calliurum2.2 in (5.5 cm)20 gal (75 L)75–82°F (24–28°C)Red-spotted tetra
Copeina guttata3.9 in (10 cm)32 gal (120 L)73–82°F (23–28°C)
Red-striped killifish
Aphyosemion striatum2 in (5 cm)11 gal (40 L)70–77°F (21–25°C)
Red-striped rasbora
Trigonopoma pauciperforata2.8 in (7 cm)22 gal (85 L)70–79°F (21–26°C)
Red-tail dwarf puffer
Carinotetraodon irrubesco1.8 in (4.5 cm)17 gal (65 L)72–82°F (22–28°C)
Red-tailed black shark
Epalzeorhynchos bicolor4.7 in (12 cm)30 gal (115 L)68–79°F (20–26°C)
Red-tailed rasbora
Rasbora borapetensis2.4 in (6 cm)18 gal (70 L)72–79°F (22–26°C)
Redback paradisefish
Macropodus erythropterus3.1 in (8 cm)20 gal (75 L)68–86°F (20–30°C)Redbreast acara
Laetacara dorsigera2.8 in (7 cm)20 gal (75 L)72–81°F (22–27°C)Redcheek betta
Betta rutilans1.4 in (3.5 cm)11 gal (40 L)73–81°F (23–27°C)
Redeye puffer
Carinotetraodon lorteti2.4 in (6 cm)14 gal (54 L)75–82°F (24–28°C)
Redfin tiger loach
Syncrossus berdmorei9.4 in (24 cm)50 gal (190 L)70–79°F (21–26°C)
Redhead Cichlid
Vieja melanurus14.6 in (37 cm)75 gal (285 L)77–82°F (25–28°C)
Redhook
Myloplus rubripinnis9.8 in (25 cm)70 gal (265 L)73–81°F (23–27°C)
Redline Torpedo Barb
Sahyadria denisonii4.3 in (11 cm)53 gal (200 L)59–77°F (15–25°C)Redtail bagrid
Hemibagrus nemurus25.6 in (65 cm)185 gal (700 L)72–81°F (22–27°C)
Redtail catfish
Phractocephalus hemioliopterus39.4 in (100 cm)1,506 gal (5,700 L)68–79°F (20–26°C)
Redtail loach
Yasuhikotakia modesta9.8 in (25 cm)75 gal (285 L)73–82°F (23–28°C)
Redtail splitfin
Xenotoca eiseni2.8 in (7 cm)20 gal (75 L)64–82°F (18–28°C)
Redtail wolf fish
Hoplerythrinus unitaeniatus11 in (28 cm)66 gal (250 L)73–82°F (23–28°C)
Relict splitfin
Xenoophorus captivus2.4 in (6 cm)16 gal (60 L)61–79°F (16–26°C)
Reticulated catfish
Perrunichthys perruno23.6 in (60 cm)185 gal (700 L)72–79°F (22–26°C)
Reticulated cory
Corydoras reticulatus2.4 in (6 cm)20 gal (75 L)72–79°F (22–26°C)Reynolds's cory
Corydoras reynoldsi1.4 in (3.5 cm)12 gal (45 L)72–79°F (22–26°C)Rio pearlfish
Nematolebias whitei3.1 in (8 cm)14 gal (54 L)68–77°F (20–25°C)
Ripsaw catfish
Oxydoras niger39.4 in (100 cm)396 gal (1,500 L)72–82°F (22–28°C)Robust cory
Corydoras robustus3.1 in (8 cm)40 gal (150 L)72–79°F (22–26°C)
Roman Nose Angelfish
Pterophyllum leopoldi3.9 in (10 cm)30 gal (115 L)72–84°F (22–29°C)
Ropefish
Erpetoichthys calabaricus14.6 in (37 cm)143 gal (540 L)73–86°F (23–30°C)
Rosy barb
Pethia conchonius2.8 in (7 cm)24 gal (90 L)61–75°F (16–24°C)
Rosy bitterling
Rhodeus ocellatus3.1 in (8 cm)21 gal (80 L)64–75°F (18–24°C)Rosy loach
Petruichthys sp. 'rosy'1.2 in (3 cm)14 gal (54 L)68–79°F (20–26°C)
Rosy tetra
Hyphessobrycon rosaceus1.6 in (4 cm)15 gal (55 L)75–82°F (24–28°C)
Round-tail paradise fish
Macropodus ocellatus3.1 in (8 cm)20 gal (75 L)61–75°F (16–24°C)
Royal pleco
Panaque nigrolineatus16.9 in (43 cm)125 gal (473 L)72–82°F (22–28°C)
Royal tetra
Inpaichthys kerri1.4 in (3.5 cm)15 gal (55 L)75–81°F (24–27°C)Royal whiptail catfish
Sturisoma panamense7.9 in (20 cm)40 gal (150 L)72–82°F (22–28°C)
Ruby tetra
Axelrodia riesei0.8 in (2 cm)12 gal (45 L)73–81°F (23–27°C)
Rummy-nose tetra
Hemigrammus rhodostomus2 in (5 cm)20 gal (75 L)75–81°F (24–27°C)
Rummynose tetra
Petitella bleheri2 in (5 cm)20 gal (75 L)75–81°F (24–27°C)
Rust cory
Corydoras rabauti2.4 in (6 cm)20 gal (75 L)72–79°F (22–26°C)
Rusty cichlid
Iodotropheus sprengerae3.9 in (10 cm)24 gal (90 L)77–84°F (25–29°C)
Ryukin
Carassius auratus7.9 in (20 cm)25 gal (95 L)61–73°F (16–23°C)
Saddle cichlid
Aequidens tetramerus7.9 in (20 cm)53 gal (200 L)75–82°F (24–28°C)
Saddle-back Loach
Homaloptera orthogoniata4.3 in (11 cm)45 gal (170 L)68–77°F (20–25°C)
Saddled bichir
Polypterus endlicherii25.6 in (65 cm)151 gal (570 L)77–84°F (25–29°C)Sailfin cory
Scleromystax macropterus3.5 in (9 cm)44 gal (165 L)64–70°F (18–21°C)
Sailfin molly
Poecilia latipinna4.7 in (12 cm)24 gal (90 L)70–79°F (21–26°C)
Sailfin pim
Leiarius pictus23.6 in (60 cm)396 gal (1,500 L)72–79°F (22–26°C)
Sailfin pleco
Pterygoplichthys disjunctivus17.7 in (45 cm)100 gal (380 L)73–84°F (23–29°C)
Sailfin tetra
Crenuchus spilurus2.4 in (6 cm)20 gal (75 L)73–82°F (23–28°C)
Salt and pepper cory
Corydoras habrosus1.4 in (3.5 cm)15 gal (55 L)68–79°F (20–26°C)
Salvin's Cichlid
Cichlasoma salvini5.9 in (15 cm)26 gal (100 L)72–79°F (22–26°C)
Sands cory
Corydoras davidsandsi2.4 in (6 cm)21 gal (80 L)72–79°F (22–26°C)
Sardine Cichlid
Cyprichromis leptosoma4.3 in (11 cm)45 gal (170 L)75–81°F (24–27°C)
Saulosi Mbuna
Pseudotropheus saulosi3.9 in (10 cm)42 gal (160 L)73–81°F (23–27°C)
Sawbwa barb
Sawbwa resplendens1.2 in (3 cm)20 gal (75 L)68–75°F (20–24°C)
Scarlet badis
Dario dario0.8 in (2 cm)11 gal (40 L)72–79°F (22–26°C)
Scarlet betta
Betta coccina1.6 in (4 cm)11 gal (40 L)72–86°F (22–30°C)Scarlet Cactus Pleco (L025)
Pseudacanthicus pirarara15.7 in (40 cm)119 gal (450 L)79–86°F (26–30°C)
Scarlet goby
Rhinogobius zhoui1.6 in (4 cm)12 gal (45 L)61–75°F (16–24°C)
Scarlet livebearer
Micropoecilia picta1.6 in (4 cm)16 gal (60 L)72–82°F (22–28°C)
Schomburgk's leaffish
Polycentrus schomburgkii3.9 in (10 cm)20 gal (75 L)72–82°F (22–28°C)
Schwartz's catfish
Corydoras schwartzi2.8 in (7 cm)20 gal (75 L)72–79°F (22–26°C)
Scissortail rasbora
Rasbora trilineata5.5 in (14 cm)45 gal (170 L)72–77°F (22–25°C)
Scrapermouth mbuna
Labeotropheus trewavasae4.7 in (12 cm)53 gal (200 L)75–81°F (24–27°C)
Senegal bichir
Polypterus senegalus13.8 in (35 cm)143 gal (540 L)75–82°F (24–28°C)
Sepik rainbowfish
Glossolepis multisquamata5.5 in (14 cm)55 gal (208 L)79–86°F (26–30°C)
Serpae tetra
Hyphessobrycon serpae1.8 in (4.5 cm)17 gal (65 L)68–82°F (20–28°C)Seven-banded giant gourami
Osphronemus septemfasciatus19.7 in (50 cm)264 gal (1,000 L)72–82°F (22–28°C)
Seven-spot archerfish
Toxotes chatareus15.7 in (40 cm)106 gal (400 L)77–86°F (25–30°C)
Severum
Heros efasciatus11.8 in (30 cm)65 gal (245 L)72–84°F (22–29°C)Shadow catfish
Hyalobagrus flavus1.8 in (4.5 cm)13 gal (50 L)70–79°F (21–26°C)Sharpnose chocolate gourami
Sphaerichthys acrostoma2.8 in (7 cm)24 gal (90 L)72–79°F (22–26°C)
Sharptooth tetra
Micralestes acutidens3.5 in (9 cm)32 gal (120 L)72–79°F (22–26°C)
Sheepshead minnow
Cyprinodon variegatus2.8 in (7 cm)26 gal (100 L)68–81°F (20–27°C)
Sheepshead swordtail
Xiphophorus birchmanni2.8 in (7 cm)24 gal (90 L)68–81°F (20–27°C)
Shortfin molly
Poecilia mexicana4.3 in (11 cm)32 gal (120 L)72–82°F (22–28°C)
Shubunkin
Carassius auratus11.8 in (30 cm)50 gal (190 L)39–75°F (4–24°C)
Siamese algae eater
Crossocheilus oblongus6.3 in (16 cm)37 gal (140 L)68–79°F (20–26°C)
Siamese tiger perch
Datnioides pulcher17.7 in (45 cm)185 gal (700 L)75–82°F (24–28°C)Sicklefin livebearer
Girardinus falcatus2.6 in (6.5 cm)11 gal (40 L)68–82°F (20–28°C)Sidestripe rasbora
Rasbora paviana3.1 in (8 cm)32 gal (120 L)72–79°F (22–26°C)
Silver arowana
Osteoglossum bicirrhosum39.4 in (100 cm)396 gal (1,500 L)75–82°F (24–28°C)
Silver distichodus
Distichodus affinis7.9 in (20 cm)53 gal (200 L)73–81°F (23–27°C)
Silver Dollar
Metynnis argenteus5.9 in (15 cm)70 gal (265 L)75–82°F (24–28°C)
Silver Dollar
Metynnis hypsauchen5.5 in (14 cm)70 gal (265 L)75–82°F (24–28°C)
Silver flying fox
Crossocheilus reticulatus6.3 in (16 cm)53 gal (200 L)64–77°F (18–25°C)Silver saum
Andinoacara stalsbergi7.9 in (20 cm)74 gal (280 L)68–79°F (20–26°C)
Silver shark
Balantiocheilus melanopterus15.7 in (40 cm)95 gal (360 L)72–82°F (22–28°C)
Silver tiger perch
Datnioides polota11.8 in (30 cm)79 gal (300 L)75–82°F (24–28°C)
Silvertip tetra
Hasemania nana1.6 in (4 cm)18 gal (70 L)73–82°F (23–28°C)
Similis shell dweller
Neolamprologus similis2 in (5 cm)20 gal (75 L)75–81°F (24–27°C)
Six-banded distichodus
Distichodus sexfasciatus15.7 in (40 cm)143 gal (540 L)72–79°F (22–26°C)
Six-barred panchax
Epiplatys sexfasciatus3.9 in (10 cm)20 gal (75 L)72–81°F (22–27°C)
Sixray cory
Aspidoras pauciradiatus1.4 in (3.5 cm)13 gal (50 L)70–81°F (21–27°C)
Skunk cory
Corydoras arcuatus2.2 in (5.5 cm)20 gal (75 L)72–79°F (22–26°C)
Skunk loach
Yasuhikotakia morleti3.3 in (8.5 cm)37 gal (140 L)73–82°F (23–28°C)
Slender betta
Betta bellica3.5 in (9 cm)20 gal (75 L)77–86°F (25–30°C)
Slender buffalohead cichlid
Steatocranus tinanti5.1 in (13 cm)24 gal (90 L)75–82°F (24–28°C)
Slender catfish
Pimelodella gracilis6.7 in (17 cm)40 gal (150 L)72–79°F (22–26°C)Slender hemiodus
Hemiodus gracilis7.1 in (18 cm)66 gal (250 L)73–82°F (23–28°C)
Slender rasbora
Rasbora daniconius3.9 in (10 cm)32 gal (120 L)72–81°F (22–27°C)
Snakeskin barb
Desmopuntius rhomboocellatus2.2 in (5.5 cm)20 gal (75 L)72–82°F (22–28°C)
Snakeskin gourami
Trichopodus pectoralis9.8 in (25 cm)61 gal (230 L)72–86°F (22–30°C)Snowball pleco (L102)
Hypancistrus inspector5.9 in (15 cm)30 gal (113 L)75–82°F (24–28°C)
Somphongs's rasbora
Trigonostigma somphongsi1 in (2.5 cm)12 gal (45 L)73–81°F (23–27°C)
South American bumblebee catfish
Microglanis iheringi3.1 in (8 cm)20 gal (75 L)72–79°F (22–26°C)
Southern platy
Xiphophorus maculatus2.8 in (7 cm)15 gal (55 L)68–79°F (20–26°C)
Southern redbelly dace
Phoxinus erythrogaster3.9 in (10 cm)61 gal (230 L)57–70°F (14–21°C)
Spadetail checkerboard cichlid
Dicrossus maculatus3.5 in (9 cm)24 gal (90 L)79–86°F (26–30°C)Spanish toothcarp
Valencia hispanica3 in (7.5 cm)20 gal (75 L)54–79°F (12–26°C)
Spanner barb
Barbodes lateristriga5.9 in (15 cm)74 gal (280 L)72–79°F (22–26°C)
Speckled peacock bass
Cichla temensis39 in (99 cm)396 gal (1,500 L)79–84°F (26–29°C)
Spiketail paradisefish
Pseudosphromenus cupanus2.6 in (6.5 cm)12 gal (45 L)68–82°F (20–28°C)
Spiketail platy
Xiphophorus xiphidium2 in (5 cm)16 gal (60 L)68–79°F (20–26°C)
Spilo
Champsochromis spilorhynchus15.7 in (40 cm)125 gal (475 L)75–81°F (24–27°C)
Spined loach
Cobitis taenia4.3 in (11 cm)32 gal (120 L)39–68°F (4–20°C)
Splash tetra
Copella arnoldi2.2 in (5.5 cm)18 gal (70 L)68–82°F (20–28°C)
Spot-tail Tetra
Brycinus imberi7.9 in (20 cm)65 gal (245 L)72–81°F (22–27°C)
Spotfin hatchetfish
Thoracocharax stellatus3.5 in (9 cm)26 gal (100 L)73–82°F (23–28°C)
Spotscale Barb
Barbus holotaenia4.7 in (12 cm)32 gal (120 L)75–86°F (24–30°C)Spotted algae eater
Gyrinocheilus pennocki11 in (28 cm)53 gal (200 L)72–82°F (22–28°C)
Spotted barb
Barbodes binotatus5.9 in (15 cm)40 gal (150 L)72–79°F (22–26°C)
Spotted betta
Betta picta2 in (5 cm)16 gal (60 L)72–81°F (22–27°C)
Spotted blue-eye
Pseudomugil gertrudae1.5 in (3.8 cm)17 gal (65 L)70–82°F (21–28°C)
Spotted cory
Corydoras melanistius2.2 in (5.5 cm)16 gal (60 L)72–79°F (22–26°C)
Spotted cory
Corydoras ambiacus2.6 in (6.5 cm)20 gal (75 L)70–81°F (21–27°C)
Spotted danio
Danio nigrofasciatus1.5 in (3.7 cm)11 gal (40 L)64–79°F (18–26°C)
Spotted hatchetfish
Gasteropelecus maculatus3.5 in (9 cm)26 gal (100 L)73–82°F (23–28°C)
Spotted headstander
Chilodus punctatus3.1 in (8 cm)22 gal (85 L)68–82°F (20–28°C)Spotted hillstream loach
Gastromyzon punctulatus2.6 in (6.5 cm)20 gal (75 L)68–75°F (20–24°C)
Spotted hoplo
Megalechis thoracata5.9 in (15 cm)40 gal (150 L)64–82°F (18–28°C)Spotted metynnis
Metynnis maculatus7.1 in (18 cm)92 gal (350 L)73–82°F (23–28°C)
Spotted pike characin
Boulengerella maculata13.8 in (35 cm)106 gal (400 L)75–82°F (24–28°C)
Spotted pimelodus
Pimelodus pictus5.5 in (14 cm)55 gal (210 L)72–77°F (22–25°C)
Spotted pleco
Hypostomus punctatus11.8 in (30 cm)79 gal (300 L)72–82°F (22–28°C)
Spotted raphael catfish
Agamyxis pectinifrons5.9 in (15 cm)40 gal (150 L)72–79°F (22–26°C)
Spotted Severum
Heros notatus11.8 in (30 cm)58 gal (220 L)72–84°F (22–29°C)
Spotted silver dollar
Metynnis lippincottianus5.5 in (14 cm)53 gal (200 L)73–81°F (23–27°C)
Spotted skiffia
Skiffia multipunctata2.4 in (6 cm)16 gal (60 L)68–79°F (20–26°C)Spotted splash tetra
Copella nattereri2 in (5 cm)16 gal (60 L)75–82°F (24–28°C)Squarehead catfish
Chaca chaca7.9 in (20 cm)40 gal (150 L)72–79°F (22–26°C)
Star sapphire cichlid
Placidochromis phenochilus7.9 in (20 cm)79 gal (300 L)77–82°F (25–28°C)Starlight Bristlenose Pleco (L183)
Ancistrus dolichopterus5.5 in (14 cm)30 gal (115 L)79–84°F (26–29°C)
Steel Blue Killifish
Fundulopanchax gardneri2.2 in (5.5 cm)21 gal (80 L)70–79°F (21–26°C)
Sterba's cory
Corydoras sterbai2.6 in (6.5 cm)20 gal (75 L)75–82°F (24–28°C)
Stigmosa betta
Betta stigmosa2 in (5 cm)16 gal (60 L)73–81°F (23–27°C)Stiktos betta
Betta stiktos2 in (5 cm)11 gal (40 L)73–81°F (23–27°C)
Stinging catfish
Heteropneustes fossilis11.8 in (30 cm)65 gal (245 L)70–77°F (21–25°C)
Stoliczka's barb
Pethia stoliczkana2 in (5 cm)20 gal (75 L)64–79°F (18–26°C)
Strawberry rasbora
Boraras naevus0.8 in (2 cm)11 gal (40 L)73–81°F (23–27°C)
Streaked prochilodus
Prochilodus lineatus23.6 in (60 cm)396 gal (1,500 L)68–79°F (20–26°C)Striped barb
Desmopuntius johorensis4.7 in (12 cm)40 gal (150 L)73–79°F (23–26°C)
Striped flying barb
Esomus metallicus3 in (7.5 cm)24 gal (90 L)72–79°F (22–26°C)
Striped glass catfish
Kryptopterus macrocephalus3.5 in (9 cm)36 gal (135 L)70–79°F (21–26°C)
Striped headstander
Anostomus anostomus7.5 in (19 cm)70 gal (265 L)68–82°F (20–28°C)
Striped kribensis
Pelvicachromis taeniatus3.1 in (8 cm)19 gal (71 L)75–79°F (24–26°C)
Striped mystus
Mystus vittatus8.3 in (21 cm)60 gal (227 L)72–82°F (22–28°C)
Striped panchax
Aplocheilus lineatus4.3 in (11 cm)30 gal (115 L)72–77°F (22–25°C)
Striped raphael catfish
Platydoras armatulus8.7 in (22 cm)45 gal (170 L)75–86°F (24–30°C)Striped telmatochromis
Telmatochromis vittatus3.5 in (9 cm)20 gal (75 L)75–81°F (24–27°C)
Stripefin eartheater
Gymnogeophagus rhabdotus5.9 in (15 cm)53 gal (200 L)64–79°F (18–26°C)Sturgeon Catfish
Lamontichthys filamentosus6.3 in (16 cm)36 gal (135 L)72–86°F (22–30°C)Sulfurhead peacock
Aulonocara maylandi4.3 in (11 cm)66 gal (250 L)77–82°F (25–28°C)
Sulphur-head hap
Otopharynx lithobates6.3 in (16 cm)53 gal (200 L)75–82°F (24–28°C)
Sultan Pleco (L264)
Leporacanthicus joselimai8.7 in (22 cm)66 gal (250 L)79–86°F (26–30°C)Sumo loach
Schistura balteata3.1 in (8 cm)24 gal (90 L)72–79°F (22–26°C)
Sun catfish
Horabagrus brachysoma17.7 in (45 cm)170 gal (645 L)73–77°F (23–25°C)
Sun loach
Yasuhikotakia eos4.3 in (11 cm)53 gal (200 L)73–82°F (23–28°C)
Sunshine peacock cichlid
Aulonocara baenschi4.3 in (11 cm)63 gal (240 L)77–84°F (25–29°C)Sunshine Pleco (L014)
Scobinancistrus aureatus13.8 in (35 cm)106 gal (400 L)79–86°F (26–30°C)Sychr's catfish
Corydoras sychri1.7 in (4.3 cm)16 gal (60 L)75–81°F (24–27°C)
T-bar cichlid
Cryptoheros sajica4.7 in (12 cm)40 gal (150 L)75–82°F (24–28°C)Tailbar cichlid
Vieja hartwegi11 in (28 cm)92 gal (350 L)75–82°F (24–28°C)
Tailspot climbing perch
Ctenopoma kingsleyae7.9 in (20 cm)66 gal (250 L)73–82°F (23–28°C)Tailspot Cory
Corydoras caudimaculatus2 in (5 cm)20 gal (75 L)68–81°F (20–27°C)Talking catfish
Acanthodoras spinosissimus5.9 in (15 cm)26 gal (100 L)72–82°F (22–28°C)
Tanganyika clown
Eretmodus cyanostictus3.5 in (9 cm)29 gal (110 L)75–81°F (24–27°C)
Tanganyika killifish
Lamprichthys tanganicanus5.5 in (14 cm)40 gal (150 L)73–77°F (23–25°C)
Tequila splitfin
Zoogoneticus tequila2.6 in (6.5 cm)20 gal (75 L)68–79°F (20–26°C)
Texas Cichlid
Herichthys cyanoguttatus11.8 in (30 cm)66 gal (250 L)68–90°F (20–32°C)
Thick-lipped gourami
Trichogaster labiosa3.5 in (9 cm)20 gal (75 L)72–82°F (22–28°C)
Threadfin acara
Acarichthys heckelii7.9 in (20 cm)53 gal (200 L)75–86°F (24–30°C)Threadfin cichlid
Petrochromis trewavasae7.1 in (18 cm)159 gal (600 L)75–81°F (24–27°C)Threadfin glassfish
Gymnochanda filamentosa1.6 in (4 cm)16 gal (60 L)73–81°F (23–27°C)
Threadfin rainbowfish
Iriatherina werneri1.6 in (4 cm)13 gal (50 L)72–86°F (22–30°C)
Three spot gourami
Trichopodus trichopterus5.1 in (13 cm)30 gal (115 L)75–86°F (24–30°C)
Three-lined pencilfish
Nannostomus trifasciatus1.3 in (3.3 cm)15 gal (55 L)72–82°F (22–28°C)
Three-spined stickleback
Gasterosteus aculeatus3.1 in (8 cm)20 gal (75 L)50–64°F (10–18°C)
Three-Stripe Dwarf Cichlid
Apistogramma trifasciata2.2 in (5.5 cm)20 gal (75 L)68–77°F (20–25°C)
Three-striped African catfish
Pareutropius buffei3.1 in (8 cm)20 gal (75 L)75–82°F (24–28°C)
Threespot eartheater
Satanoperca daemon9.8 in (25 cm)119 gal (450 L)79–86°F (26–30°C)
Threestripe cory
Corydoras trilineatus2.2 in (5.5 cm)16 gal (60 L)72–81°F (22–27°C)
Threestripe croaking gourami
Trichopsis schalleri2 in (5 cm)12 gal (45 L)72–82°F (22–28°C)
Thunder Royal Pleco (L027)
Panaque armbrusteri17.7 in (45 cm)151 gal (570 L)77–84°F (25–29°C)
Ticto barb
Pethia ticto2.4 in (6 cm)20 gal (75 L)64–75°F (18–24°C)
Tiger barb
Puntigrus tetrazona2.8 in (7 cm)20 gal (75 L)68–79°F (20–26°C)
Tiger hillstream loach
Sewellia lineolata2.6 in (6.5 cm)25 gal (95 L)68–75°F (20–24°C)
Tiger pacu
Acnodon normani5.1 in (13 cm)46 gal (175 L)72–82°F (22–28°C)Tiger Pleco (L002)
Panaqolus sp. L0025.1 in (13 cm)40 gal (150 L)77–84°F (25–29°C)
Tiger shovelnose catfish
Pseudoplatystoma fasciatum35.4 in (90 cm)300 gal (1,135 L)75–82°F (24–28°C)
Tinfoil barb
Barbonymus schwanenfeldii13.8 in (35 cm)180 gal (680 L)72–82°F (22–28°C)
Tire-track eel
Mastacembelus armatus27.6 in (70 cm)119 gal (450 L)75–82°F (24–28°C)
Toba betta
Betta rubra1.6 in (4 cm)11 gal (40 L)72–81°F (22–27°C)Transvestite cichlid
Nanochromis transvestitus2.8 in (7 cm)20 gal (75 L)73–81°F (23–27°C)Trimac cichlid
Amphilophus trimaculatus13.8 in (35 cm)90 gal (340 L)75–82°F (24–28°C)
True glass catfish
Kryptopterus bicirrhis5.9 in (15 cm)26 gal (100 L)70–79°F (21–26°C)
True parrot cichlid
Hoplarchus psittacus13.8 in (35 cm)151 gal (570 L)79–86°F (26–30°C)True red terror
Mesoheros festae17.7 in (45 cm)151 gal (570 L)75–82°F (24–28°C)
True severum
Heros severus7.9 in (20 cm)75 gal (285 L)79–86°F (26–30°C)Tucano tetra
Tucanoichthys tucano0.8 in (2 cm)12 gal (45 L)75–82°F (24–28°C)Turquoise killifish
Nothobranchius furzeri2.4 in (6 cm)11 gal (40 L)68–79°F (20–26°C)
Twig catfish
Farlowella vittata5.9 in (15 cm)30 gal (115 L)75–81°F (24–27°C)Two-banded killifish
Chromaphyosemion bitaeniatum2.2 in (5.5 cm)10 gal (38 L)72–79°F (22–26°C)Two-spot catfish
Mystus bimaculatus4.7 in (12 cm)30 gal (114 L)72–81°F (22–27°C)
Two-Stripe Dwarf Cichlid
Apistogramma bitaeniata3 in (7.5 cm)20 gal (75 L)72–84°F (22–29°C)
Two-striped aphyosemion
Aphyosemion bivittatum2 in (5 cm)11 gal (40 L)72–79°F (22–26°C)Twostripe pencilfish
Nannostomus digrammus1.4 in (3.5 cm)12 gal (45 L)75–82°F (24–28°C)
Uaru cichlid
Uaru amphiacanthoides11.8 in (30 cm)65 gal (245 L)81–86°F (27–30°C)Uberis betta
Betta uberis1.4 in (3.6 cm)11 gal (40 L)73–81°F (23–27°C)
Umbrella Cichlid
Apistogramma borellii2.6 in (6.5 cm)18 gal (70 L)68–79°F (20–26°C)
Upside-down catfish
Synodontis nigriventris3.9 in (10 cm)30 gal (115 L)75–82°F (24–28°C)
Vaillant's Chocolate Gourami
Sphaerichthys vaillanti2.2 in (5.5 cm)20 gal (75 L)70–77°F (21–25°C)Vampire Pleco (L029)
Leporacanthicus galaxias9.8 in (25 cm)66 gal (250 L)79–86°F (26–30°C)
Vampire Tetra
Hydrolycus scomberoides11.8 in (30 cm)185 gal (700 L)75–82°F (24–28°C)
Variable platy
Xiphophorus variatus2.8 in (7 cm)15 gal (55 L)68–79°F (20–26°C)
Venezuelan orange cory
Corydoras venezuelanus2.4 in (6 cm)20 gal (75 L)68–79°F (20–26°C)
Venustus cichlid
Nimbochromis venustus11.8 in (30 cm)74 gal (280 L)75–82°F (24–28°C)
Vermiculated squeaker
Synodontis schoutedeni5.9 in (15 cm)24 gal (90 L)72–81°F (22–27°C)
Viejita dwarf cichlid
Apistogramma viejita2.8 in (7 cm)20 gal (75 L)75–82°F (24–28°C)
Vietnamese white cloud
Tanichthys micagemmae1.2 in (3 cm)12 gal (45 L)64–73°F (18–23°C)
Violet cory
Corydoras similis2.2 in (5.5 cm)12 gal (45 L)70–81°F (21–27°C)
Violet Goby
Gobioides broussonnetii21.7 in (55 cm)119 gal (450 L)72–79°F (22–26°C)
Volcano rasbora
Rasbora vulcanus1.8 in (4.5 cm)15 gal (55 L)73–79°F (23–26°C)
Vulture Catfish
Calophysus macropterus15.7 in (40 cm)120 gal (455 L)75–84°F (24–29°C)
Walking catfish
Clarias batrachus23.6 in (60 cm)600 gal (2,270 L)68–79°F (20–26°C)
Wallago catfish
Wallago attu59.1 in (150 cm)528 gal (2,000 L)72–82°F (22–28°C)
Weather Loach
Misgurnus anguillicaudatus11 in (28 cm)55 gal (210 L)50–73°F (10–23°C)
Weitzman's cory
Corydoras weitzmani2.4 in (6 cm)20 gal (75 L)72–79°F (22–26°C)West African Bichir
Polypterus retropinnis13.8 in (35 cm)53 gal (200 L)77–82°F (25–28°C)
West African lungfish
Protopterus annectens39.4 in (100 cm)211 gal (800 L)77–86°F (25–30°C)
Western Mosquitofish
Gambusia affinis3 in (7.5 cm)7 gal (25 L)64–81°F (18–27°C)
Western rainbowfish
Melanotaenia australis4.7 in (12 cm)30 gal (115 L)72–81°F (22–27°C)
Whiptail catfish
Rineloricaria sp.4.3 in (11 cm)20 gal (75 L)75–84°F (24–29°C)
White Cloud Mountain minnow
Tanichthys albonubes1.6 in (4 cm)12 gal (45 L)57–72°F (14–22°C)
White-cheek goby
Rhinogobius duospilus2 in (5 cm)16 gal (60 L)61–75°F (16–24°C)
White-Spotted Cichlid
Tropheus duboisi4.7 in (12 cm)29 gal (110 L)73–82°F (23–28°C)
Whiteseam betta
Betta albimarginata1.2 in (3 cm)11 gal (40 L)73–82°F (23–28°C)
Whitespot eartheater
Satanoperca leucosticta7.1 in (18 cm)79 gal (300 L)75–84°F (24–29°C)
Wimple piranha
Catoprion mento5.9 in (15 cm)53 gal (200 L)75–82°F (24–28°C)
Wolf cichlid
Parachromis dovii27.6 in (70 cm)250 gal (946 L)75–82°F (24–28°C)
Wolf fish
Hoplias malabaricus19.7 in (50 cm)106 gal (400 L)72–82°F (22–28°C)
Wrestling halfbeak
Dermogenys pusilla2.8 in (7 cm)25 gal (95 L)75–82°F (24–28°C)
X-ray tetra
Pristella maxillaris1.8 in (4.5 cm)18 gal (70 L)72–82°F (22–28°C)
Xingu cory
Corydoras xinguensis2 in (5 cm)18 gal (70 L)72–81°F (22–27°C)
Xingu eartheater
Retroculus xinguensis9.8 in (25 cm)185 gal (700 L)79–86°F (26–30°C)
Yellow Kribensis
Pelvicachromis humilis4.9 in (12.5 cm)30 gal (115 L)75–81°F (24–27°C)
Yellow Phantom Tetra
Hyphessobrycon roseus0.8 in (2 cm)7 gal (25 L)68–82°F (20–28°C)
Yellow sand cichlid
Xenotilapia flavipinnis3.5 in (9 cm)53 gal (200 L)75–81°F (24–27°C)
Yellow-tail acei
Pseudotropheus acei4.7 in (12 cm)42 gal (160 L)75–82°F (24–28°C)
Yellow-tailed Congo tetra
Alestopetersius caudalis2.4 in (6 cm)20 gal (75 L)72–79°F (22–26°C)
Yellowfin chalceus
Chalceus erythrurus9.4 in (24 cm)79 gal (300 L)73–82°F (23–28°C)Yoma danio
Danio feegradei2 in (5 cm)20 gal (75 L)72–79°F (22–26°C)
Yoyo loach
Botia almorhae6.3 in (16 cm)42 gal (160 L)66–81°F (19–27°C)
Zebra acara
Nannacara adoketa4.7 in (12 cm)25 gal (95 L)72–82°F (22–28°C)
Zebra danio
Danio rerio2 in (5 cm)15 gal (55 L)64–75°F (18–24°C)
Zebra dwarf sucker
Otocinclus cocama1.8 in (4.5 cm)11 gal (40 L)70–77°F (21–25°C)
Zebra loach
Botia striata3.5 in (9 cm)37 gal (140 L)70–79°F (21–26°C)
Zebra mbuna
Metriaclima zebra5.9 in (15 cm)55 gal (210 L)75–82°F (24–28°C)
Zebra obliquidens
Astatotilapia latifasciata4.9 in (12.5 cm)30 gal (115 L)73–82°F (23–28°C)
Zebra pleco
Hypancistrus zebra3.1 in (8 cm)15 gal (55 L)79–86°F (26–30°C)Zebra shovelnose
Brachyplatystoma tigrinum23.6 in (60 cm)151 gal (570 L)72–90°F (22–32°C)Zebra spiny eel
Macrognathus zebrinus11.8 in (30 cm)42 gal (160 L)72–81°F (22–27°C)
Zebra tilapia
Heterotilapia buttikoferi11.8 in (30 cm)159 gal (600 L)73–82°F (23–28°C)Zipper loach
Paracanthocobitis botia3.9 in (10 cm)29 gal (110 L)70–79°F (21–26°C)
Zodiac loach
Mesonoemacheilus triangularis2.4 in (6 cm)24 gal (90 L)68–79°F (20–26°C)Zorro Catfish
Platystomatichthys sturio15.7 in (40 cm)120 gal (455 L)75–82°F (24–28°C)
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