Search Species
Search for fish species by common or scientific name, or use filters to browse by water type, size, temperament, and difficulty.
Water Type
Search for fish species by common or scientific name, or use filters to browse by water type, size, temperament, and difficulty.
Found 303 species
Osteochilus partilineatus
Osteochilus partilineatus is a tiny little bony-lipped barb from West Kalimantan (Borneo) that lives in deep, blackwater forest streams with flowing water. Its small adult size is the cool part here - it is one of those "wait, that is an Osteochilus?" species - but it is not really a standard aquarium fish, so most of its care is best approached like a sensitive blackwater river/stream cyprinid.
Garra kemali
Garra kemali is a tiny Turkish Garra that hangs close to the bottom and spends a lot of time grazing surfaces for edible bits. It comes from marshes and lakes rather than the typical fast riffles people associate with many other Garra, and its wild populations are considered endangered, so its story is more conservation-focused than aquarium-trade focused.
Phoxinus phoxinus
Phoxinus phoxinus is a small, fast-swimming minnow associated with cool, well-oxygenated waters. It is a gregarious shoaling fish; males intensify in colour during breeding. Note: the name P. phoxinus has historically been applied broadly across Eurasia, but the group is now treated as a species complex in which true P. phoxinus may be restricted to parts of Western Europe.
Perca fluviatilis
The European Perch is a predatory freshwater fish recognized by its olive-green body, dark vertical bars, and bright red/orange pelvic and anal fins. It is an active hunter that can grow quite large and is best suited to coolwater, spacious aquariums with strong filtration and plenty of cover.
Gobio gobio
The European gudgeon is a small bottom-dwelling cyprinid with a slender body, sandy-brown mottling, and distinct barbels at the corners of the mouth used to locate food in the substrate. It is an active schooling fish that prefers well-oxygenated water and a sand or fine-gravel bottom, often resting on the substrate between foraging bouts. Best kept in cool, river-style aquariums with moderate flow rather than warm tropical setups.
Indoreonectes evezardi
This small Indian brook/stone loach occurs in stream habitats in India (Western Ghats and Satpura range). The species includes cave-adapted forms (e.g., reported from Kotumsar Cave) that may show reduced pigmentation and regressed eyes.
Vieja fenestrata
Vieja fenestrata is a big, chunky Central American cichlid that spends a lot of its time cruising the lower half of the tank and redecorating by digging. Give it room, strong filtration, and some tough hardscape, and you get a really interactive fish with that classic Vieja attitude.
Mastacembelus erythrotaenia
Fire eels are those big, snake-y "spiny eels" with the red/orange flame striping that really pops once they settle in and color up. They love to wedge themselves under wood or burrow into sand and then come out at dusk to cruise around and beg for food-super personable once they trust you, but they get huge and can absolutely inhale small tankmates.
Barbucca diabolica
This is one of those tiny, oddball loaches that spends its whole day scooting along wood and rocks like a little vacuum cleaner, and those glowing red eyes are the whole vibe. It is peaceful and shy, but it gets way more confident in a dim, cover-filled tank with leaf litter and lots of little hideouts. Biggest thing people miss is feeding - it is a bottom grazer and pretty much will not chase food up in the water column.
Megalonema platycephalum
This is a real-deal South American pimelodid catfish that stays in that "big but not monster" range - around a foot long - with that wide, bulldog-ish head and long whiskers. Its natural diet includes insect larvae and even fish scales, so it has that sneaky bottom-predator vibe and will absolutely inhale meaty foods once it settles in. The big "gotcha" is that it sometimes shows up mislabeled in shops (even as other catfish species), so you want to buy it assuming you'll be housing a 12-inch predator.
Nothobranchius foerschi
Nothobranchius foerschi is an annual killifish from coastal Tanzania that lives in temporary pools, so it is basically built to grow up fast, spawn hard, and not hang around forever. The males are ridiculously colorful and do a lot of little sparring and display posturing, which is half the fun of keeping them in a species tank.
Yunnanilus forkicaudalis
This is a tiny Chinese stone loach that sticks close to the bottom and cruises around like a little mouse, poking into sand and between small rocks. Its wild home is pretty localized in Yunnan, so its more of a "cool oddball" than something you will reliably see at every fish shop. Treat it like a small, peaceful stream/edge-of-lake loach and it will reward you with nonstop foraging behavior.