Advanced freshwater fish: R
All advanced freshwater fish whose common name starts with R, in alphabetical order. Each card links to its care guide.
26 species
Rainbow belly pipefish
Microphis deocata
Freshwater5.9 in (15 cm) · 20 gal (75 L)77–82°F (25–28°C)
Rainbow sicyopus
Sicyopus auxilimentus
Freshwater1.4 in (3.5 cm) · 14 gal (54 L)73–81°F (23–27°C)
Rainbow stiphodon
Stiphodon ornatus
Freshwater2.6 in (6.5 cm) · 13 gal (50 L)68–79°F (20–26°C)
Red belly pipefish
Hippichthys heptagonus
FreshwaterBrackish5.9 in (15 cm) · 21 gal (80 L)75–84°F (24–29°C)
Red lip goby
Sicyopus exallisquamulus
Freshwater2.4 in (6 cm) · 14 gal (54 L)73–81°F (23–27°C)
Red tail barracuda
Acestrorhynchus falcatus
Freshwater11.8 in (30 cm) · 100 gal (380 L)72–82°F (22–28°C)
Red tail sicyopterus
Sicyopterus lagocephalus
Freshwater5.1 in (13 cm) · 29 gal (110 L)73–81°F (23–27°C)
Red-bellied pacu
Piaractus brachypomus
Freshwater34.6 in (88 cm) · 1,057 gal (4,000 L)73–82°F (23–28°C)
Red-bellied piranha
Pygocentrus nattereri
Freshwater12.6 in (32 cm) · 160 gal (605 L)75–82°F (24–28°C)
Red-tail brycinus
Brycinus macrolepidotus
Freshwater20.9 in (53 cm) · 264 gal (1,000 L)73–82°F (23–28°C)
Red-tail dwarf puffer
Carinotetraodon irrubesco
Freshwater1.8 in (4.5 cm) · 17 gal (65 L)72–82°F (22–28°C)
Red-tail pike characin
Boulengerella cuvieri
Freshwater34.6 in (88 cm) · 528 gal (2,000 L)73–82°F (23–28°C)Red-tail silver shark
Hypselobarbus kurali
Freshwater13.8 in (35 cm) · 211 gal (800 L)72–82°F (22–28°C)
Redcheek betta
Betta rutilans
Freshwater1.4 in (3.5 cm) · 11 gal (40 L)73–81°F (23–27°C)
Redtail bagrid
Hemibagrus nemurus
Freshwater25.6 in (65 cm) · 185 gal (700 L)72–81°F (22–27°C)
Redtail catfish
Phractocephalus hemioliopterus
Freshwater39.4 in (100 cm) · 1,506 gal (5,700 L)68–79°F (20–26°C)
Reticulated catfish
Perrunichthys perruno
Freshwater23.6 in (60 cm) · 185 gal (700 L)72–79°F (22–26°C)
Ribbon hillstream loach
Erromyzon kalotaenia
Freshwater2.3 in (5.8 cm) · 20 gal (75 L)64–75°F (18–24°C)
Riffle goby
Stiphodon pelewensis
Freshwater1.8 in (4.5 cm) · 14 gal (54 L)73–81°F (23–27°C)
Ripsaw catfish
Oxydoras niger
Freshwater39.4 in (100 cm) · 396 gal (1,500 L)72–82°F (22–28°C)
Rita catfish
Rita rita
Freshwater59.1 in (150 cm) · 1,057 gal (4,000 L)72–86°F (22–30°C)
Rose flame glassfish
Gymnochanda verae
Freshwater1.2 in (3 cm) · 11 gal (40 L)75–82°F (24–28°C)
Rosita dwarf cichlid
Apistogramma rositae
Freshwater2 in (5 cm) · 16 gal (60 L)75–82°F (24–28°C)
Royal knifefish
Chitala blanci
Freshwater39.4 in (100 cm) · 317 gal (1,200 L)75–82°F (24–28°C)
Royal pleco
Panaque nigrolineatus
Freshwater16.9 in (43 cm) · 125 gal (473 L)72–82°F (22–28°C)
Ruby sundadanio
Sundadanio rubellus
Freshwater0.9 in (2.3 cm) · 11 gal (40 L)73–81°F (23–27°C)
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