Search Species
Search for fish species by common or scientific name, or use filters to browse by water type, size, temperament, and difficulty.
Found 285 species
Caqueta whiptail catfish
Sturisoma caquetae
Sturisoma caquetae is one of those sleek, sturgeon-bodied whiptails that just glides around like a little underwater paper airplane. It stays pretty slim and spends its time clinging to hard surfaces and grazing biofilm, so it does best in a mature, super-clean tank with good flow and oxygen.
Cardinal Tetra
Paracheirodon axelrodi
The Cardinal Tetra is a small, vibrant freshwater fish known for its striking iridescent blue and red coloring. It is closely related to the Neon Tetra but can be distinguished by the extended red stripe that runs the entire length of its body. People love keeping Cardinal Tetras in their tanks because they're peaceful and great at schooling together.
Carens barb
Enteromius carens
Enteromius carens is a small freshwater cyprinid from West-Central Africa. It is known from the Kouilou basin to the Chiloango basin (Republic of the Congo, Cabinda/Angola, and DR Congo), with a single record from the Foulakari River in the lower Congo basin. Maximum recorded size is about 3.2 cm standard length.
Cascudo-viola
Loricariichthys anus
Large Loricariinae whiptail (Loricariichthys) from southern Brazil/Uruguay–lower Paraná basins; benthic detritus/iliophagous-omnivorous feeder. Males show an elongated lower lip during the reproductive season, and the genus includes facultative air-breathers; provide clean, well-oxygenated water and fine sand.
Celestial Pearl Danio
Danio margaritatus
This is the little "galaxy fish" everyone stops to stare at-dark bluish body sprinkled with pearly spots and those punchy orange/red fins. They're peaceful but kinda shy, and you'll see the best color and the cutest little male sparring displays when you keep a proper group in a heavily planted tank with gentle flow.
Chapultepec splitfin
Girardinichthys viviparus
This is a little goodeid livebearer from the Valley of Mexico where it comes from cool, oxygen-rich waters - think more like a temperate pond fish than a tropical livebearer. Males can get really sharp-looking with black edging (sometimes almost fully black) on the fins, and they do best when you keep them on the cool side with big, regular water changes.
Cherry barb
Rohanella titteya
Cherry barbs are small Sri Lankan barbs; males intensify to deep red (especially when breeding). They're generally peaceful and can be shy unless kept in a group, and they look best in planted aquariums with subdued lighting and darker substrate.
Chessboard cichlid
Dicrossus filamentosus
Dicrossus filamentosus is that classy little blackwater dwarf cichlid with the crisp "chessboard" pattern and, in mature males, a super cool lyretail with streamers. It's generally mellow and shy, but when a female is guarding eggs/fry she turns into a tiny, fearless bulldozer (and it's honestly awesome to watch). Give them soft, clean water, leaf litter, and calm tankmates and they really settle in and show their best colors.
Chinese hillstream loach
Jinshaia sinensis
Jinshaia sinensis is one of those slick, fast-water loaches built for life clinging to rocks in strong current - big fins, low profile, and always looking for biofilm to pick at. It can do great in a purpose-built river tank with tons of oxygen and flow, but it is not the kind of loach that tolerates "average community tank" conditions for long.
Chocolate-colored catfish
Rineloricaria lanceolata
This is a slim little whiptail (a Loricariid) that spends most of its time gliding over sand and leaves, picking at biofilm like a tiny vacuum cleaner. Give it driftwood, caves, and calm tankmates and it turns into a super chill, sneaky-bottom-dweller with that awesome long whip tail and high dorsal fin.
Cobalt blue goby
Stiphodon semoni
Stiphodon semoni is one of those little river gobies that spends its whole day perched on rocks, scooting around, and grazing biofilm/aufwuchs like a tiny underwater goat. Give it clean, oxygen-rich water and a nice algae-y rockscape, and the males especially can look unreal with that blue-green sheen and bands.
Common otocinclus
Otocinclus vittatus
O. vittatus is that tiny little "oto" you see plastered to plant leaves and the glass, just quietly vacuuming up soft algae and biofilm all day. The big trick with them is they're amazing grazers, but they can absolutely run out of food in a too-clean/new tank, so you've got to plan on supplementing with algae wafers/blanched veg.