Search Species
Search for fish species by common or scientific name, or use filters to browse by water type, size, temperament, and difficulty.
Found 665 species
Cantor's croaker
Johnius cantori
Johnius cantori is a tiny little tropical croaker from the eastern Indian Ocean, and its whole claim to fame is how obscure it is - FishBase lists it as known only from the holotype collected in Malaysia. Like other croakers, it lives near the bottom in coastal waters, making it unlikely to be found in aquarium trade.
Caohai stone loach
Eonemachilus caohaiensis
This is a tiny Chinese stone loach from high-elevation Caohai Lake in Guizhou, and it is basically a bottom-hugging little noodle that wants clean, well-oxygenated water. It is not something you will see in the trade much, but if you ever did, I would treat it like other small cool-water nemacheilid loaches: lots of cover, smooth sand, and steady filtration.
Cape Fear shiner
Notropis mekistocholas
This is a tiny, super-local North Carolina shiner from the Cape Fear River basin, and it has a weirdly long, coiled gut for a shiner because it can make a living on a lot of plant-y, detritus-type foods. In the wild it hangs around rocky and sandy pools and runs and often schools up with other minnows, plus it shifts into slower pools to spawn in late spring into summer.
Capitlineata silhouette goby
Silhouettea capitlineata
This is a super tiny tropical marine goby that basically lives its life glued to the bottom, blending in and keeping a low profile. The neat name clue is the "head lines" - it was named for dark lines running down from the eye, so its face patterning is part of the whole deal. Because it tops out around an inch, its care info in the aquarium hobby is pretty scarce compared to bigger, commonly-sold gobies.
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.
Cartier's deepwater snake eel
Benthenchelys cartieri
A deepwater marine snake eel (Ophichthidae) known from the Philippines (Western Central Pacific). FishBase notes members of the genus Benthenchelys are pelagic; recorded depth range to 1168 m. Not an established aquarium 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.
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 blenny
Starksia sluiteri
A tiny reef-dweller with bold chessboard spots, this little blenny spends most of its time peeking from rubble and rock crevices. It is fun to watch during feeding time as it darts out to snag tiny crustaceans, then zips back to its hidey-hole.