Freshwater aquarium fish: B
All freshwater fish whose common name starts with B, in alphabetical order. Each card links to its care guide.
272 species and 22 varieties
Badis
Badis badis
Freshwater2.4 in (6 cm) · 20 gal (75 L)59–77°F (15–25°C)
Bahia parotocinclus
Parotocinclus bahiensis
Freshwater1.6 in (4 cm) · 14 gal (54 L)72–81°F (22–27°C)
Balunga betta
Betta balunga
Freshwater2 in (5 cm) · 16 gal (60 L)72–81°F (22–27°C)
Banded acara
Bujurquina vittata
Freshwater4.7 in (12 cm) · 34 gal (130 L)68–82°F (20–28°C)Banded betta
Betta taeniata
Freshwater2.2 in (5.5 cm) · 16 gal (60 L)72–81°F (22–27°C)
Banded bushfish
Microctenopoma fasciolatum
Freshwater3.1 in (8 cm) · 24 gal (90 L)75–82°F (24–28°C)
Banded cory
Scleromystax barbatus
Freshwater3.9 in (10 cm) · 40 gal (150 L)66–75°F (19–24°C)
Banded darter
Etheostoma zonale
Freshwater3.1 in (7.8 cm) · 26 gal (100 L)59–70°F (15–21°C)
Banded darter tetra
Nannocharax fasciatus
Freshwater2.6 in (6.5 cm) · 21 gal (80 L)73–82°F (23–28°C)
Banded gourami
Trichogaster fasciata
Freshwater3.5 in (9 cm) · 26 gal (100 L)70–82°F (21–28°C)
Banded gudgeon
Mogurnda cingulata
Freshwater4.7 in (12 cm) · 30 gal (112 L)72–82°F (22–28°C)
Banded headstander
Synaptolaemus latofasciatus
Freshwater3.9 in (10 cm) · 40 gal (150 L)75–82°F (24–28°C)
Banded hillstream loach
Pseudogastromyzon fasciatus
Freshwater3.9 in (10 cm) · 25 gal (95 L)64–75°F (18–24°C)
Banded jewel cichlid
Hemichromis elongatus
Freshwater6.3 in (16 cm) · 53 gal (200 L)75–82°F (24–28°C)
Banded jewelfish
Hemichromis fasciatus
Freshwater9.8 in (25 cm) · 119 gal (450 L)73–81°F (23–27°C)
Banded knifefish
Gymnotus carapo
Freshwater15.7 in (40 cm) · 79 gal (300 L)73–82°F (23–28°C)
Banded lampeye
Aplocheilichthys spilauchen
FreshwaterBrackish2.8 in (7 cm) · 21 gal (80 L)73–82°F (23–28°C)
Banded leporinus
Leporinus fasciatus
Freshwater10.6 in (27 cm) · 40 gal (150 L)68–82°F (20–28°C)
Banded pike characin
Boulengerella lateristriga
Freshwater10.2 in (26 cm) · 159 gal (600 L)73–82°F (23–28°C)
Banded rainbowfish
Melanotaenia trifasciata
Freshwater5.9 in (15 cm) · 50 gal (190 L)75–84°F (24–29°C)
Banded silver dollar
Metynnis fasciatus
Freshwater3.9 in (10 cm) · 70 gal (265 L)75–82°F (24–28°C)
Banded sisorid catfish
Glyptothorax buchanani
Freshwater2.8 in (7 cm) · 29 gal (110 L)68–79°F (20–26°C)
Banded sunfish
Enneacanthus obesus
Freshwater3.5 in (9 cm) · 20 gal (75 L)64–72°F (18–22°C)
Banded tiger loach
Syncrossus helodes
Freshwater11.8 in (30 cm) · 75 gal (285 L)75–86°F (24–30°C)
Bandit cichlid
Guianacara geayi
Freshwater5.1 in (13 cm) · 40 gal (150 L)75–82°F (24–28°C)
Bandit pleco
Hypancistrus furunculus
Freshwater3.9 in (10 cm) · 42 gal (160 L)79–86°F (26–30°C)
Bandula barb
Pethia bandula
Freshwater2 in (5 cm) · 20 gal (75 L)73–81°F (23–27°C)
Bangka rasbora
Rasbora bankanensis
Freshwater2.8 in (7 cm) · 24 gal (90 L)72–81°F (22–27°C)
Banjo catfish
Bunocephalus coracoideus
Freshwater5.9 in (15 cm) · 25 gal (95 L)72–81°F (22–27°C)
Bannertail cory
Brochis robineae
Freshwater2.6 in (6.5 cm) · 20 gal (75 L)73–79°F (23–26°C)
Bar-tailed hoplo
Megalechis picta
Freshwater5.9 in (15 cm) · 53 gal (200 L)72–79°F (22–26°C)
Barhead pipefish
Microphis leiaspis
FreshwaterBrackish7.5 in (19 cm) · 32 gal (120 L)72–81°F (22–27°C)
Barito loach
Kapuasia falaris
Freshwater2.6 in (6.5 cm) · 20 gal (75 L)73–81°F (23–27°C)
Barlow's dwarf cichlid
Apistogramma barlowi
Freshwater3.1 in (8 cm) · 20 gal (75 L)73–82°F (23–28°C)
Barlow's mbuna
Maylandia barlowi
Freshwater3.9 in (10 cm) · 53 gal (200 L)75–82°F (24–28°C)
Barna baril
Opsarius barna
Freshwater5.9 in (15 cm) · 53 gal (200 L)64–79°F (18–26°C)
Barred bichir
Polypterus delhezi
Freshwater13.8 in (35 cm) · 53 gal (200 L)75–86°F (24–30°C)
Barred danio
Devario pathirana
Freshwater2.4 in (6 cm) · 24 gal (90 L)70–79°F (21–26°C)
Barred knifefish
Steatogenys elegans
Freshwater9.8 in (25 cm) · 66 gal (250 L)75–82°F (24–28°C)
Barred lamprologus
Neolamprologus fasciatus
Freshwater5.9 in (15 cm) · 66 gal (250 L)75–81°F (24–27°C)
Barred loach
Nemacheilus fasciatus
Freshwater3.1 in (8 cm) · 24 gal (90 L)68–77°F (20–25°C)
Barred pencilfish
Nannostomus espei
Freshwater1.2 in (3 cm) · 15 gal (55 L)72–82°F (22–28°C)
Barred rainbowfish
Chilatherina fasciata
Freshwater4.7 in (12 cm) · 53 gal (200 L)75–86°F (24–30°C)
Barred spiny eel
Macrognathus pancalus
Freshwater7.5 in (19 cm) · 42 gal (160 L)73–82°F (23–28°C)
Barred-tail cory
Hoplisoma cochui
Freshwater1.4 in (3.5 cm) · 13 gal (50 L)70–82°F (21–28°C)
Barton's cichlid
Herichthys bartoni
Freshwater8.7 in (22 cm) · 79 gal (300 L)75–84°F (24–29°C)
Basilisk pleco
Hypostomus basilisko
Freshwater9.4 in (24 cm) · 79 gal (300 L)77–84°F (25–29°C)
Basketmouth cichlid
Caquetaia kraussii
Freshwater11.8 in (30 cm) · 79 gal (300 L)79–86°F (26–30°C)
Batanta rainbowfish
Melanotaenia synergos
Freshwater3 in (7.7 cm) · 29 gal (110 L)77–86°F (25–30°C)
Bay snook
Petenia splendida
Freshwater19.7 in (50 cm) · 151 gal (570 L)77–86°F (25–30°C)
Beak peacock
Aulonocara rostratum
Freshwater7.9 in (20 cm) · 70 gal (265 L)75–82°F (24–28°C)
Beardless barb
Cyclocheilichthys apogon
Freshwater7.9 in (20 cm) · 66 gal (250 L)72–82°F (22–28°C)
Bebe mormyrid
Hyperopisus bebe
Freshwater20.1 in (51 cm) · 264 gal (1,000 L)73–82°F (23–28°C)
Beijiang barb
Acrossocheilus beijiangensis
Freshwater5.1 in (13 cm) · 53 gal (200 L)64–79°F (18–26°C)
Belted pike cichlid
Lugubria cincta
Freshwater10.2 in (26 cm) · 159 gal (600 L)75–82°F (24–28°C)
Bengal danio
Devario devario
Freshwater3.5 in (9 cm) · 34 gal (130 L)59–81°F (15–27°C)
Bengal glass danio
Danionella priapus
Freshwater0.7 in (1.9 cm) · 5 gal (20 L)72–79°F (22–26°C)
Bengal loach
Botia dario
Freshwater5.1 in (13 cm) · 37 gal (140 L)73–79°F (23–26°C)
Bengal tiger catfish
Batasio fluviatilis
Freshwater5 in (12.8 cm) · 29 gal (110 L)72–79°F (22–26°C)
Bernatzik's baril
Opsarius bernatziki
Freshwater4.3 in (11 cm) · 42 gal (160 L)72–81°F (22–27°C)
Bethan's cory
Brochis bethanae
Freshwater2.6 in (6.5 cm) · 20 gal (75 L)73–81°F (23–27°C)
Betta
Betta splendens
Freshwater3 in (7.5 cm) · 7 gal (25 L)72–86°F (22–30°C)8 varieties
Biara
Rhaphiodon vulpinus
Freshwater31.5 in (80 cm) · 660 gal (2,500 L)73–82°F (23–28°C)
Big spot pleco
Ancistomus feldbergae
Freshwater7.9 in (20 cm) · 66 gal (250 L)79–86°F (26–30°C)
Big-mouth hap
Tyrannochromis macrostoma
Freshwater13.8 in (35 cm) · 211 gal (800 L)75–82°F (24–28°C)
Bigeye basketmouth
Acaronia nassa
Freshwater7.9 in (20 cm) · 79 gal (300 L)75–82°F (24–28°C)
Bigeye callochromis
Callochromis macrops
Freshwater5.3 in (13.5 cm) · 79 gal (300 L)75–81°F (24–27°C)
Bigeye squeaker
Synodontis alberti
Freshwater7.9 in (20 cm) · 40 gal (150 L)72–79°F (22–26°C)
Bigeye tropheops
Tropheops macrophthalmus
Freshwater4.5 in (11.5 cm) · 66 gal (250 L)75–82°F (24–28°C)
Bigeye upside-down squeaker
Synodontis resupinatus
Freshwater11.8 in (30 cm) · 106 gal (400 L)73–81°F (23–27°C)
Bigfin dwarf cichlid
Apistogramma megaptera
Freshwater2.6 in (6.5 cm) · 16 gal (60 L)77–84°F (25–29°C)
Bigmouth dwarf cichlid
Apistogramma megastoma
Freshwater3.7 in (9.5 cm) · 26 gal (100 L)75–82°F (24–28°C)
Bigspot eartheater
Geophagus megasema
Freshwater9.1 in (23 cm) · 119 gal (450 L)77–84°F (25–29°C)
Bigtooth river stingray
Potamotrygon henlei
Freshwater21.7 in (55 cm) · 396 gal (1,500 L)75–82°F (24–28°C)
Binduchitra barb
Systomus binduchitra
Freshwater3.9 in (10 cm) · 29 gal (110 L)72–81°F (22–27°C)
Bintan licorice gourami
Parosphromenus bintan
Freshwater1.3 in (3.2 cm) · 5 gal (20 L)72–81°F (22–27°C)
Birdsong goby
Stiphodon surrufus
Freshwater1 in (2.5 cm) · 11 gal (40 L)73–81°F (23–27°C)
Black acara
Cichlasoma bimaculatum
Freshwater7.1 in (18 cm) · 40 gal (150 L)68–82°F (20–28°C)
Black and orange nyererei
Pundamilia igneopinnis
Freshwater5.1 in (13 cm) · 53 gal (200 L)73–81°F (23–27°C)
Black arowana
Osteoglossum ferreirai
Freshwater35.4 in (90 cm) · 396 gal (1,500 L)79–86°F (26–30°C)
Black arrow tetra
Inpaichthys luizae
Freshwater1.4 in (3.5 cm) · 14 gal (54 L)72–81°F (22–27°C)
Black band cory
Osteogaster zygata
Freshwater2.6 in (6.5 cm) · 21 gal (80 L)72–79°F (22–26°C)
Black calvus
Altolamprologus calvus
Freshwater5.1 in (13 cm) · 53 gal (200 L)75–81°F (24–27°C)
Black darter tetra
Poecilocharax weitzmani
Freshwater1.9 in (4.7 cm) · 14 gal (54 L)75–82°F (24–28°C)
Black devil stingray
Potamotrygon leopoldi
Freshwater23.6 in (60 cm) · 436 gal (1,650 L)68–84°F (20–29°C)
Black ghost knifefish
Apteronotus albifrons
Freshwater17.7 in (45 cm) · 85 gal (320 L)75–82°F (24–28°C)
Black lancer catfish
Bagrichthys macracanthus
Freshwater9.1 in (23 cm) · 55 gal (210 L)75–82°F (24–28°C)
Black molly
Poecilia sphenops
FreshwaterBrackish4.7 in (12 cm) · 24 gal (90 L)70–82°F (21–28°C)4 varieties
Black neon tetra
Hyphessobrycon herbertaxelrodi
Freshwater1.4 in (3.5 cm) · 16 gal (60 L)72–82°F (22–28°C)
Black ocellatus
Lamprologus speciosus
Freshwater2.2 in (5.5 cm) · 11 gal (40 L)75–81°F (24–27°C)
Black otocinclus
Hisonotus notatus
Freshwater2 in (5 cm) · 14 gal (54 L)72–81°F (22–27°C)
Black pacu
Colossoma macropomum
Freshwater39.4 in (100 cm) · 660 gal (2,500 L)72–82°F (22–28°C)
Black paradise fish
Macropodus spechti
Freshwater3.1 in (8 cm) · 20 gal (75 L)68–82°F (20–28°C)
Black phantom tetra
Hyphessobrycon megalopterus
Freshwater1.4 in (3.6 cm) · 17 gal (65 L)70–82°F (21–28°C)
Black piranha
Serrasalmus rhombeus
Freshwater15.7 in (40 cm) · 106 gal (400 L)75–82°F (24–28°C)
Black ruby barb
Pethia nigrofasciata
Freshwater2.4 in (6 cm) · 20 gal (75 L)72–79°F (22–26°C)
Black shark
Labeo chrysophekadion
Freshwater23.6 in (60 cm) · 660 gal (2,500 L)68–79°F (20–26°C)
Black tiger dario
Dario tigris
Freshwater0.8 in (2 cm) · 5 gal (20 L)68–79°F (20–26°C)
Black toraja goby
Mugilogobius sarasinorum
Freshwater3.1 in (8 cm) · 21 gal (80 L)79–82°F (26–28°C)
Black widow tetra
Gymnocorymbus ternetzi
Freshwater2.4 in (6 cm) · 20 gal (75 L)68–79°F (20–26°C)
Black-banded rainbowfish
Melanotaenia nigrans
Freshwater3.9 in (10 cm) · 32 gal (120 L)72–82°F (22–28°C)
Black-barred livebearer
Quintana atrizona
Freshwater1.3 in (3.4 cm) · 11 gal (40 L)72–82°F (22–28°C)
Black-belly lamprologus
Neolamprologus nigriventris
Freshwater3.9 in (10 cm) · 42 gal (160 L)75–81°F (24–27°C)
Black-lined loach
Ambastaia nigrolineata
Freshwater3.1 in (8 cm) · 24 gal (90 L)72–81°F (22–27°C)
Black-top mouse catfish
Hassar orestis
Freshwater11.8 in (30 cm) · 106 gal (400 L)73–82°F (23–28°C)
Blackbanded sunfish
Enneacanthus chaetodon
Freshwater3.9 in (10 cm) · 20 gal (75 L)39–75°F (4–24°C)
Blackbelly limia
Limia melanogaster
Freshwater2.4 in (6 cm) · 16 gal (60 L)72–82°F (22–28°C)
Blackbelt cichlid
Vieja maculicauda
Freshwater12.6 in (32 cm) · 66 gal (250 L)72–82°F (22–28°C)
Blackcap coptodon
Coptodon discolor
Freshwater9.1 in (23 cm) · 106 gal (400 L)77–86°F (25–30°C)
Blackchin sand diver
Xenotilapia melanogenys
Freshwater5.9 in (15 cm) · 106 gal (400 L)75–81°F (24–27°C)
Blackedge spiny eel
Mastacembelus nigromarginatus
Freshwater19.7 in (50 cm) · 106 gal (400 L)73–82°F (23–28°C)
Blackfin cory
Hoplisoma leucomelas
Freshwater1.8 in (4.5 cm) · 16 gal (60 L)73–79°F (23–26°C)
Blackfin goodea
Goodea atripinnis
Freshwater7.1 in (18 cm) · 53 gal (200 L)61–79°F (16–26°C)
Blackgullet firemouth
Thorichthys pasionis
Freshwater7.9 in (20 cm) · 66 gal (250 L)75–84°F (24–29°C)
Blackline mosquitofish
Gambusia vittata
Freshwater1.8 in (4.5 cm) · 14 gal (54 L)72–81°F (22–27°C)
Blackline poropuntius barb
Poropuntius melanogrammus
Freshwater7.9 in (20 cm) · 66 gal (250 L)64–77°F (18–25°C)
Blackmargin tetra
Moenkhausia nigromarginata
Freshwater2.1 in (5.3 cm) · 20 gal (75 L)73–82°F (23–28°C)
Blackspot callochromis
Callochromis melanostigma
Freshwater5.9 in (15 cm) · 79 gal (300 L)75–81°F (24–27°C)
Blackspot dwarf barb
Enteromius stigmatopygus
Freshwater1.4 in (3.5 cm) · 11 gal (40 L)72–81°F (22–27°C)
Blackspot lampeye
Poropanchax stigmatopygus
Freshwater1.2 in (3 cm) · 11 gal (40 L)72–79°F (22–26°C)
Blackstripe cory
Hoplisoma bondi
Freshwater2 in (5 cm) · 15 gal (55 L)70–79°F (21–26°C)
Blackstripe dwarf cichlid
Taeniacara candidi
Freshwater1.6 in (4 cm) · 11 gal (40 L)75–82°F (24–28°C)
Blacktop cory
Corydoras acutus
Freshwater1.7 in (4.4 cm) · 13 gal (50 L)72–82°F (22–28°C)
Blackwing hatchetfish
Carnegiella marthae
Freshwater1.4 in (3.5 cm) · 30 gal (115 L)68–82°F (20–28°C)
Bleeding heart tetra
Hyphessobrycon erythrostigma
Freshwater2.4 in (6 cm) · 20 gal (75 L)70–81°F (21–27°C)
Bleher's rainbowfish
Chilatherina bleheri
Freshwater4.7 in (12 cm) · 53 gal (200 L)73–81°F (23–27°C)
Blind cave tetra
Astyanax mexicanus
Freshwater4.7 in (12 cm) · 25 gal (95 L)70–77°F (21–25°C)
Bloch's catfish
Pimelodus blochii
Freshwater9.8 in (25 cm) · 53 gal (200 L)68–79°F (20–26°C)
Blockhead cichlid
Steatocranus casuarius
Freshwater4.7 in (12 cm) · 25 gal (95 L)75–82°F (24–28°C)
Blood parrot cichlid
A. citrinellus x V. synspilum
Freshwater7.9 in (20 cm) · 32 gal (120 L)72–82°F (22–28°C)
Blood-red jewel cichlid
Hemichromis lifalili
Freshwater3.9 in (10 cm) · 20 gal (75 L)73–79°F (23–26°C)
Bloodfin tetra
Aphyocharax anisitsi
Freshwater2.2 in (5.5 cm) · 20 gal (75 L)72–82°F (22–28°C)
Bloodred tiger pleco
Panaqolus claustellifer
Freshwater3.1 in (8 cm) · 42 gal (160 L)77–84°F (25–29°C)
Blotch melanochromis
Melanochromis baliodigma
Freshwater4.3 in (11 cm) · 66 gal (250 L)75–82°F (24–28°C)
Blotched darter tetra
Nannocharax macropterus
Freshwater2.4 in (6 cm) · 21 gal (80 L)73–82°F (23–28°C)
Blotched sisorid catfish
Glyptothorax macromaculatus
Freshwater6.3 in (16 cm) · 42 gal (160 L)68–79°F (20–26°C)
Blue acara
Andinoacara pulcher
Freshwater5.9 in (15 cm) · 42 gal (160 L)72–82°F (22–28°C)1 variety
Blue Amur bitterling
Paracheilognathus himantegus
Freshwater3.1 in (8 cm) · 30 gal (112 L)57–79°F (14–26°C)
Blue and yellow hap
Protomelas spilonotus
Freshwater8.7 in (22 cm) · 119 gal (450 L)75–81°F (24–27°C)
Blue axelrodi rasbora
Sundadanio axelrodi
Freshwater0.8 in (2 cm) · 12 gal (45 L)73–79°F (23–26°C)
Blue cory
Hoplisoma nattereri
Freshwater2.6 in (6.5 cm) · 20 gal (75 L)68–73°F (20–23°C)
Blue danio
Danio kerri
Freshwater1.8 in (4.5 cm) · 11 gal (40 L)68–79°F (20–26°C)
Blue diamond discus
Symphysodon tarzoo
Freshwater7.9 in (20 cm) · 65 gal (245 L)81–88°F (27–31°C)
Blue dolphin cichlid
Cyrtocara moorii
Freshwater9.8 in (25 cm) · 66 gal (250 L)77–84°F (25–29°C)
Blue fin roloffi
Enigmatochromis lucanusi
Freshwater2.2 in (5.5 cm) · 29 gal (110 L)73–81°F (23–27°C)
Blue flash firemouth
Thorichthys aureus
Freshwater7.1 in (18 cm) · 66 gal (250 L)75–84°F (24–29°C)
Blue gold peacock
Aulonocara korneliae
Freshwater3.9 in (10 cm) · 63 gal (240 L)75–81°F (24–27°C)
Blue gularis
Fundulopanchax sjoestedti
Freshwater4.7 in (12 cm) · 21 gal (80 L)72–79°F (22–26°C)
Blue hook silver dollar
Myloplus aylan
Freshwater13.8 in (35 cm) · 170 gal (645 L)75–82°F (24–28°C)
Blue johanni cichlid
Melanochromis cyaneorhabdos
Freshwater3.9 in (10 cm) · 45 gal (170 L)75–82°F (24–28°C)
Blue jumper catfish
Exallodontus aguanai
Freshwater7.9 in (20 cm) · 106 gal (400 L)73–82°F (23–28°C)
Blue medusa pleco
Ancistrus macrophthalmus
Freshwater3.5 in (9 cm) · 29 gal (110 L)77–84°F (25–29°C)
Blue neon carnival gudgeon
Hypseleotris leuciscus
Freshwater2 in (5 cm) · 14 gal (54 L)75–82°F (24–28°C)
Blue neon cichlid
Paracyprichromis nigripinnis
Freshwater4.3 in (11 cm) · 48 gal (180 L)75–81°F (24–27°C)
Blue neon dwarf goby
Stiphodon atropurpureus
Freshwater2 in (5 cm) · 20 gal (75 L)72–81°F (22–27°C)
Blue neon sheatfish
Belodontichthys dinema
Freshwater31.5 in (80 cm) · 238 gal (900 L)73–81°F (23–27°C)
Blue nyererei
Pundamilia azurea
Freshwater4.7 in (12 cm) · 53 gal (200 L)73–81°F (23–27°C)
Blue orchid peacock
Aulonocara kandeense
Freshwater3.9 in (10 cm) · 63 gal (240 L)75–81°F (24–27°C)
Blue panaque (L239)
Baryancistrus beggini
Freshwater4.7 in (12 cm) · 30 gal (115 L)79–86°F (26–30°C)
Blue panchax
Aplocheilus panchax
Freshwater3.5 in (9 cm) · 20 gal (75 L)72–82°F (22–28°C)
Blue peacock bass
Cichla piquiti
Freshwater18.9 in (48 cm) · 396 gal (1,500 L)77–86°F (25–30°C)
Blue phantom pleco (L128)
Hemiancistrus sp. L128
Freshwater9.8 in (25 cm) · 66 gal (250 L)81–86°F (27–30°C)
Blue ram
Mikrogeophagus ramirezi
Freshwater2.4 in (6 cm) · 18 gal (70 L)81–86°F (27–30°C)3 varieties
Blue snakehead
Channa andrao
Freshwater5.5 in (14 cm) · 29 gal (110 L)59–77°F (15–25°C)
Blue spotted hill trout
Barilius bakeri
Freshwater5.1 in (13 cm) · 53 gal (200 L)64–79°F (18–26°C)
Blue tetra
Knodus borki
Freshwater2 in (5 cm) · 22 gal (85 L)72–79°F (22–26°C)
Blue utaka
Copadichromis cyaneus
Freshwater7.5 in (19 cm) · 79 gal (300 L)75–81°F (24–27°C)
Blue Victoria mouthbrooder
Astatotilapia nubila
Freshwater4.3 in (11 cm) · 53 gal (200 L)73–81°F (23–27°C)
Blue whale catfish
Cetopsis coecutiens
Freshwater10.6 in (27 cm) · 70 gal (265 L)72–79°F (22–26°C)
Blue zaire frontosa
Cyphotilapia gibberosa
Freshwater13.8 in (35 cm) · 119 gal (450 L)75–81°F (24–27°C)
Blue-cheek dwarf cichlid
Apistogramma eunotus
Freshwater2.6 in (6.5 cm) · 20 gal (75 L)73–82°F (23–28°C)
Blue-eyed livebearer
Priapella intermedia
Freshwater2.8 in (7 cm) · 24 gal (90 L)72–82°F (22–28°C)
Blue-eyed pleco
Panaque cochliodon
Freshwater11.8 in (30 cm) · 119 gal (450 L)73–82°F (23–28°C)
Blue-eyed tropheus
Tropheus brichardi
Freshwater4.3 in (11 cm) · 37 gal (140 L)73–82°F (23–28°C)
Blue-green lampeye
Procatopus aberrans
Freshwater2.2 in (5.5 cm) · 20 gal (75 L)72–79°F (22–26°C)
Blue-lipped buffalo head
Paragobiocichla irvinei
Freshwater4.3 in (11 cm) · 40 gal (150 L)75–82°F (24–28°C)
Blue-spot goby cichlid
Spathodus erythrodon
Freshwater3.3 in (8.5 cm) · 29 gal (110 L)75–81°F (24–27°C)
Blueberry tetra
Hyphessobrycon wadai
Freshwater1.7 in (4.2 cm) · 16 gal (60 L)72–81°F (22–27°C)
Bluefin killifish
Lucania goodei
Freshwater2 in (5 cm) · 11 gal (40 L)64–77°F (18–25°C)
Bluefin notho
Nothobranchius rachovii
Freshwater2.4 in (6 cm) · 21 gal (80 L)68–75°F (20–24°C)
Bluegill sunfish
Lepomis macrochirus
Freshwater13.8 in (35 cm) · 70 gal (265 L)41–73°F (5–23°C)
Bluespotted cory
Hoplisoma melanistium
Freshwater2.2 in (5.5 cm) · 16 gal (60 L)72–79°F (22–26°C)
Blunt-jawed elephantnose
Campylomormyrus tamandua
Freshwater15.7 in (40 cm) · 172 gal (650 L)73–82°F (23–28°C)
Blunthead cichlid
Tropheus moorii
Freshwater5.5 in (14 cm) · 92 gal (350 L)75–81°F (24–27°C)
Bluntnose ceratobranchia
Ceratobranchia obtusirostris
Freshwater2.4 in (6 cm) · 20 gal (75 L)72–81°F (22–27°C)
Boeseman's cory
Hoplisoma boesemani
Freshwater2.2 in (5.5 cm) · 16 gal (60 L)73–81°F (23–27°C)
Boeseman's rainbowfish
Melanotaenia boesemani
Freshwater4.3 in (11 cm) · 30 gal (115 L)81–86°F (27–30°C)
Boga labeo
Labeo boga
Freshwater11.8 in (30 cm) · 106 gal (400 L)68–81°F (20–27°C)
Bola pleco
Peckoltia bachi
Freshwater5.5 in (14 cm) · 53 gal (200 L)77–84°F (25–29°C)
Bolivian ram
Mikrogeophagus altispinosus
Freshwater3.1 in (8 cm) · 45 gal (170 L)75–82°F (24–28°C)
Bolt catfish
Aguarunichthys torosus
Freshwater13.4 in (34 cm) · 120 gal (455 L)72–81°F (22–27°C)
Bond's glass tetra
Xenagoniates bondi
Freshwater2.6 in (6.5 cm) · 21 gal (80 L)73–82°F (23–28°C)
Bonita tetra
Moenkhausia bonita
Freshwater3.3 in (8.5 cm) · 29 gal (110 L)72–81°F (22–27°C)
Bonti sailfin silverside
Telmatherina bonti
Freshwater3 in (7.5 cm) · 24 gal (90 L)77–84°F (25–29°C)
Boops featherfin
Ophthalmotilapia boops
Freshwater5.9 in (15 cm) · 106 gal (400 L)75–81°F (24–27°C)
Bornean leaf fish
Nandus nebulosus
Freshwater4.7 in (12 cm) · 25 gal (95 L)72–79°F (22–26°C)
Borneo black-lobe algae eater
Crossocheilus nigriloba
Freshwater4.7 in (12 cm) · 42 gal (160 L)72–79°F (22–26°C)
Borneo featherfin catfish
Silurichthys phaiosoma
Freshwater5.9 in (15 cm) · 29 gal (110 L)73–81°F (23–27°C)
Borneo glass catfish
Ompok eugeneiatus
Freshwater6.5 in (16.5 cm) · 45 gal (170 L)70–82°F (21–28°C)
Borneo gold spot halfbeak
Hemirhamphodon tengah
Freshwater1.8 in (4.5 cm) · 11 gal (40 L)73–81°F (23–27°C)
Borneo hillstream loach
Gastromyzon ctenocephalus
Freshwater1.6 in (4 cm) · 20 gal (75 L)68–75°F (20–24°C)
Borneo hornet catfish
Pseudomystus funebris
Freshwater2.4 in (6 cm) · 29 gal (110 L)73–81°F (23–27°C)
Borneo kuhli loach
Pangio borneensis
Freshwater2.5 in (6.3 cm) · 20 gal (75 L)72–81°F (22–27°C)
Borneo red-eye puffer
Carinotetraodon borneensis
Freshwater2 in (5 cm) · 14 gal (54 L)75–82°F (24–28°C)
Borneo scissortail catfish
Pseudomystus stenogrammus
Freshwater5.5 in (14 cm) · 42 gal (160 L)73–81°F (23–27°C)
Borneo tiger barb
Puntigrus anchisporus
Freshwater2.8 in (7 cm) · 29 gal (110 L)73–81°F (23–27°C)
Bottlenose catfish
Ageneiosus marmoratus
Freshwater7.9 in (20 cm) · 95 gal (360 L)72–79°F (22–26°C)
Brachybranchus eartheater
Geophagus brachybranchus
Freshwater6.7 in (17 cm) · 106 gal (400 L)77–84°F (25–29°C)
Branco dwarf cichlid
Biotoecus dicentrarchus
Freshwater2 in (5 cm) · 14 gal (54 L)75–82°F (24–28°C)
Brazilian ram
Mikrogeophagus maculicauda
Freshwater2.4 in (6 cm) · 14 gal (54 L)77–86°F (25–30°C)
Breidohr's vieja
Vieja breidohri
Freshwater7.9 in (20 cm) · 119 gal (450 L)75–84°F (24–29°C)
Breuseghem's moon tetra
Bathyaethiops breuseghemi
Freshwater2.8 in (7 cm) · 29 gal (110 L)73–81°F (23–27°C)Breviobesa betta
Betta breviobesa
Freshwater2.6 in (6.5 cm) · 16 gal (60 L)73–82°F (23–28°C)
Brevis shell dweller
Neolamprologus brevis
Freshwater2.4 in (6 cm) · 16 gal (60 L)73–81°F (23–27°C)
Brichard's chalinochromis
Chalinochromis brichardi
Freshwater4.7 in (12 cm) · 53 gal (200 L)75–81°F (24–27°C)
Brichard's Congo tetra
Alestopetersius brichardi
Freshwater3.5 in (9 cm) · 29 gal (110 L)73–81°F (23–27°C)
Brichard's spiny eel
Mastacembelus brichardi
Freshwater6.7 in (17 cm) · 53 gal (200 L)75–82°F (24–28°C)
Brichard's synodontis
Synodontis brichardi
Freshwater6.3 in (16 cm) · 50 gal (190 L)72–79°F (22–26°C)
Brichard's teleogramma
Teleogramma brichardi
Freshwater4.1 in (10.5 cm) · 53 gal (200 L)73–81°F (23–27°C)
Bridge dwarf cichlid
Apistogramma gephyra
Freshwater1.8 in (4.5 cm) · 15 gal (55 L)77–84°F (25–29°C)
Brien's cichlid
Paracyprichromis brieni
Freshwater4.3 in (11 cm) · 66 gal (250 L)75–81°F (24–27°C)
Brilliant rasbora
Rasbora einthovenii
Freshwater3.5 in (9 cm) · 20 gal (75 L)72–82°F (22–28°C)
Bristlenose pleco
Ancistrus sp.
Freshwater4.9 in (12.5 cm) · 20 gal (75 L)70–79°F (21–26°C)4 varieties
Brittan's rasbora
Kottelatia brittani
Freshwater2.4 in (6 cm) · 16 gal (60 L)68–79°F (20–26°C)
Broadhead hillstream loach
Pseudogastromyzon laticeps
Freshwater3.1 in (8 cm) · 24 gal (90 L)64–75°F (18–24°C)
Bronze cory
Osteogaster aenea
Freshwater3 in (7.5 cm) · 20 gal (75 L)70–81°F (21–27°C)2 varieties
Bronze featherback
Notopterus notopterus
Freshwater13.8 in (35 cm) · 79 gal (300 L)75–82°F (24–28°C)
Brook stickleback
Culaea inconstans
Freshwater1.8 in (4.5 cm) · 20 gal (75 L)50–68°F (10–20°C)
Brown dot peckoltia
Peckoltia oligospila
Freshwater5.9 in (15 cm) · 42 gal (160 L)77–84°F (25–29°C)
Brown ghost knifefish
Apteronotus leptorhynchus
Freshwater11.8 in (30 cm) · 85 gal (320 L)75–84°F (24–29°C)
Brown julie
Julidochromis dickfeldi
Freshwater4.3 in (11 cm) · 20 gal (75 L)73–81°F (23–27°C)
Brown pleco
Hypostomus plecostomoides
Freshwater10.2 in (26 cm) · 79 gal (300 L)77–84°F (25–29°C)
Brown spiketail paradisefish
Pseudosphromenus dayi
Freshwater2.6 in (6.5 cm) · 12 gal (45 L)68–82°F (20–28°C)
Brown-point shield skin
Aspidoras fuscoguttatus
Freshwater1.5 in (3.8 cm) · 13 gal (50 L)72–77°F (22–25°C)
Brown's betta
Betta brownorum
Freshwater1.2 in (3 cm) · 11 gal (40 L)75–82°F (24–28°C)
Brunei beauty betta
Betta macrostoma
Freshwater3.9 in (10 cm) · 20 gal (75 L)72–79°F (22–26°C)
Bucktooth tetra
Exodon paradoxus
Freshwater4.7 in (12 cm) · 45 gal (170 L)73–82°F (23–28°C)
Buenos Aires tetra
Psalidodon anisitsi
Freshwater3 in (7.5 cm) · 25 gal (95 L)66–81°F (19–27°C)
Buescher's cichlid
Neolamprologus buescheri
Freshwater3.1 in (8 cm) · 42 gal (160 L)75–81°F (24–27°C)
Bug-eyed squeaker
Synodontis pleurops
Freshwater12.8 in (32.5 cm) · 106 gal (400 L)73–81°F (23–27°C)
Bugeye squeaker
Synodontis contractus
Freshwater3.9 in (10 cm) · 30 gal (114 L)72–79°F (22–26°C)
Bukit Merah licorice gourami
Parosphromenus rubrimontis
Freshwater1.2 in (3 cm) · 5 gal (20 L)72–81°F (22–27°C)
Bulldog pleco
Chaetostoma formosae
Freshwater4.3 in (11 cm) · 40 gal (150 L)68–77°F (20–25°C)
Bullseye snakehead
Channa marulius
Freshwater47.2 in (120 cm) · 396 gal (1,500 L)72–82°F (22–28°C)
Bullwhip pimelodus
Platysilurus mucosus
Freshwater9.8 in (25 cm) · 106 gal (400 L)73–82°F (23–28°C)
Bumblebee cichlid
Pseudotropheus crabro
Freshwater5.9 in (15 cm) · 53 gal (200 L)75–82°F (24–28°C)
Bumblebee goby
Brachygobius doriae
FreshwaterBrackish1.6 in (4 cm) · 12 gal (45 L)72–82°F (22–28°C)
Bumblebee goodeid
Allotoca dugesii
Freshwater2.8 in (7 cm) · 20 gal (75 L)64–79°F (18–26°C)
Bumblebee jelly catfish
Batrochoglanis raninus
Freshwater7.9 in (20 cm) · 53 gal (200 L)73–82°F (23–28°C)
Bumblebee otocinclus
Rhinotocinclus isabelae
Freshwater0.8 in (2 cm) · 11 gal (40 L)73–82°F (23–28°C)
Bunau barb
Barbodes bunau
Freshwater3.5 in (9 cm) · 29 gal (110 L)72–81°F (22–27°C)
Burgess's cory
Hoplisoma burgessi
Freshwater2.2 in (5.5 cm) · 20 gal (75 L)72–79°F (22–26°C)
Burmese badis
Badis ruber
Freshwater2 in (5 cm) · 20 gal (75 L)64–77°F (18–25°C)
Burmese border loach
Botia histrionica
Freshwater5.1 in (13 cm) · 53 gal (200 L)72–82°F (22–28°C)
Burmese caterpillar badis
Badis pyema
Freshwater1.8 in (4.5 cm) · 11 gal (40 L)68–79°F (20–26°C)
Burmese marble bee catfish
Akysis prashadi
Freshwater2.8 in (7 cm) · 14 gal (54 L)72–79°F (22–26°C)
Burmese mini moth catfish
Hara minuscula
Freshwater1.2 in (3 cm) · 11 gal (40 L)68–79°F (20–26°C)
Burmese spiny eel
Macrognathus orthosemos
Freshwater8.7 in (22 cm) · 53 gal (200 L)73–82°F (23–28°C)
Burmese stone loach
Balitora burmanica
Freshwater3.9 in (10 cm) · 25 gal (95 L)68–79°F (20–26°C)
Burmese trout
Raiamas guttatus
Freshwater13.8 in (35 cm) · 159 gal (600 L)64–79°F (18–26°C)
Burton's mouthbrooder
Astatotilapia burtoni
Freshwater5.1 in (13 cm) · 53 gal (200 L)75–82°F (24–28°C)
Bussing's cichlid
Cribroheros bussingi
Freshwater7.1 in (18 cm) · 79 gal (300 L)75–84°F (24–29°C)
Busumana tilapia
Tilapia busumana
Freshwater8.7 in (22 cm) · 79 gal (300 L)77–86°F (25–30°C)
Butter catfish
Ompok bimaculatus
Freshwater17.7 in (45 cm) · 53 gal (200 L)68–82°F (20–28°C)
Butterfly goodeid
Ameca splendens
Freshwater4.7 in (12 cm) · 24 gal (90 L)68–82°F (20–28°C)
Butterfly hara catfish
Hara hara
Freshwater3.1 in (8 cm) · 14 gal (54 L)68–79°F (20–26°C)
Butterfly loach
Beaufortia kweichowensis
Freshwater3 in (7.5 cm) · 25 gal (95 L)61–75°F (16–24°C)
Butterfly moth catfish
Erethistes pusillus
Freshwater2 in (5 cm) · 14 gal (54 L)68–79°F (20–26°C)
Butterfly peacock bass
Cichla ocellaris
Freshwater29.1 in (74 cm) · 211 gal (800 L)75–82°F (24–28°C)
Butterfly pleco (L168)
Dekeyseria brachyura
Freshwater5.5 in (14 cm) · 40 gal (150 L)77–84°F (25–29°C)
Butterfly xenotilapia
Xenotilapia papilio
Freshwater3.1 in (8 cm) · 53 gal (200 L)75–81°F (24–27°C)
Büttikofer's pelmatochromis
Pelmatochromis buettikoferi
Freshwater9.1 in (23 cm) · 106 gal (400 L)73–81°F (23–27°C)
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