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 356 species
Tateurndina ocellicauda
Peacock gudgeons are little jewel-fish from eastern Papua New Guinea with that awesome "eye spot" on the tail and a ton of blue/yellow/red speckling. They're gentle most of the time, but the males get pretty into cave/crevice territory when they're thinking about spawning-and watching the male guard and fan eggs is seriously cool.
Jaydia poeciloptera
This is a nocturnal Indo-West Pacific cardinalfish that spends the day tucked away (even hiding in holes in soft mud) and comes out at night to feed. The really cool part is the breeding style - they pair up, and the male mouthbroods the eggs like a little floating nursery.
Ituglanis amphipotamus
This is a small, secretive trichomycterid catfish from southeastern Brazil that hugs the bottom and likes to wedge itself into tight spots. It comes from fast-flowing water over rock and sand, so it does best in a well-oxygenated setup with current and lots of little caves or crevices to vanish into.
Oxynoemacheilus persa
This is a little bottom-hugging stone loach from Iran that spends its time cruising the substrate and poking around for food. It does best when you set the tank up like a cool, clean stream - lots of oxygen, flow, smooth rocks, and hiding spots - and you will see way more natural behavior.
Hyphessobrycon peruvianus
Hyphessobrycon peruvianus is a small Upper Amazon tetra from Peru that really comes alive in a proper group - the shoaling is the whole point with this one. Keep it in soft-ish, slightly acidic water and it will stay active and calm, with that classic Hyphessobrycon vibe of always being in motion without being a jerk.
Ostorhinchus mydrus
Ostorhinchus mydrus is a little marine cardinalfish from the Philippines that hangs around coral reefs and comes alive at night. Like a lot of cardinals, its claim to fame is the male carrying the eggs in his mouth - super cool behavior if you ever get to see a pair settle in and spawn.
Nomorhamphus celebensis
This is a cool little Sulawesi halfbeak that spends most of its time cruising the surface and picking food right off the top. They do best in a small group with lots of surface cover (floating plants are perfect), and they really reward you if you keep the water clean and stable. Also worth knowing: a lot of info online mixes up their exact habitat, and that can lead people to keep them too warm.
Eustomias precarius
Eustomias precarius is a deep-sea dragonfish from the open ocean off the western central Atlantic (Caribbean area). Its whole deal is the classic dragonfish vibe - bioluminescent light organs and a mouth built for grabbing whatever drifts by in the dark. This is strictly a wild, deepwater animal, not something that can be kept alive long-term in a normal aquarium.
Neblinichthys pilosus
This is that weirdly awesome little pleco with the punk-rock bristles - mature males get those spiky odontodes on the head and snout that make it look like it rolled out of a 1980s show. It stays pretty small for a pleco, but it is a true wild-type fish from remote Venezuela, so it does best in a clean, oxygen-rich setup with lots of flow and hiding spots.
Corydoras pygmaeus
Pygmy cories are tiny little armored catfish that do this super-cool thing most cories don't: they'll cruise around in the midwater in a loose school instead of just shuffling along the bottom. Give them a soft sandy substrate, lots of plants to weave through, and a proper group, and they turn into nonstop little busybodies.
Fundulopanchax puerzli
Fundulopanchax puerzli is a freshwater killifish from western Cameroon (Lower Wouri system), inhabiting small rainforest streams and swampy/slow-moving waters. It reaches about 8 cm TL, and is typically maintained in soft water (around 2–5 dGH) with slightly acidic to near-neutral pH (around 6.8), subdued lighting, and dense cover/spawning mops or fine plants.
Qianlabeo striatus
Qianlabeo striatus is a tiny, river-dwelling labeonin carp from Guizhou, China (Pearl River drainage) that stays under about 3.5 inches. It is the only species in its genus, and in the aquarium hobby it is basically a "data-poor" fish - you will likely be guessing a bit on care unless you can match it to its exact natural stream conditions.