Search Species
Search for fish species by common or scientific name, or use filters to browse by water type, size, temperament, and difficulty.
Found 451 species
Carvalho's tetra
Tetragonopterus carvalhoi
This South American characin is described from northern Brazil (rio Jari, Amazon basin) and reaches about 6.5 cm SL. It is distinguished from congeners by a lozenge-shaped dark spot on the caudal peduncle.
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.
Chapala catfish
Ictalurus ochoterenai
This is a Mexico-native Ictalurus catfish from the Lerma River basin/Lake Chapala system. Think of it like a regional channel-catfish cousin - a bottom-hugging, food-motivated predator/omnivore that gets big enough that an aquarium becomes impractical fast unless you're basically running an indoor pond.
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.
Chekopa Mylochromis
Mylochromis chekopae
This is a Lake Malawi "hap" from the Mylochromis group that hangs out deeper over sand and works the bottom for tiny foods. In the wild its menu is basically little crustaceans plus some algae, so it does best long-term when you feed it like a grazing micro-predator instead of a pure carnivore.
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.
Clouded archerfish
Toxotes blythii
This is the freshwater archerfish that does the whole "shoot water at bugs" thing, and it is ridiculously fun to watch once they settle in. They are surface-oriented, quick, and kind of predatory in that "if it fits, it might get eaten" way, so you plan tankmates around their mouth size. Give them clean, well-oxygenated water and a tight lid, and they act like little hunters all day.
Clown loach
Chromobotia macracanthus
Clown loaches are those orange fish with the chunky black bands that act like total goofballs-piling into the same cave, clicking at each other, and sometimes doing that "am I dead?" sideways nap. They stay way calmer and more confident in a proper group, and once they're settled they'll spend all day cruising the bottom and sifting around for snacks.