Search Species
Search for fish species by common or scientific name, or use filters to browse by water type, size, temperament, and difficulty.
Found 289 species
Numamutsu
Nipponocypris sieboldii
Nipponocypris sieboldii (Numamutsu) is a Japanese native minnow-type fish that likes calmer water than a lot of stream cyprinids, but it is still a strong, active swimmer. Give it room and some current, and it really comes into its own in a group with lots of open swimming space.
One-spot Jupiaba tetra
Jupiaba mucronata
Jupiaba mucronata is a little Guyana characin that tops out around 4 cm SL, and it fits that classic "busy, always on the move" tetra vibe. Its claim to fame in a lot of checklists is the single prominent shoulder (humeral) spot, and it does best when you lean into a roomy, current-friendly setup and keep it in a proper group.
Osteochilus kerinciensis
Osteochilus kerinciensis
This is a mid-sized Southeast Asian cyprinid from Sumatra, and its whole world basically revolves around the Batang Hari drainage (including highland lakes like Lake Kerinci). Its wild range is pretty tight, and there is basically no solid aquarium-specific info out there for it, so if you ever see one in the trade its best to treat it like a riverine labeonin barb: clean water, lots of oxygen, and a calmer community setup with room to cruise.
Ouachita shiner
Lythrurus snelsoni
This is a little Ouachita Mountains native shiner that stays genuinely small (around 2 inches max), so its all about a tight school and lots of open swimming room. Like other Lythrurus, it can really color up when its happy and settled, especially if you keep it cool, clean, and in a group. Its not a hard fish once established, but its way less forgiving of warm, low-oxygen, dirty conditions than most beginner tropicals.
Pacific blue-eye
Pseudomugil signifer
Pacific blue-eyes are tiny Aussie "blue-eye" fish with those unreal electric-blue eyes and a nice little shimmer when they're in a group. Give them plants, gentle flow, and a proper shoal, and the males will posture and flare at each other in this super cool, non-lethal (usually) displayy way. They'll also tolerate a bit of salt (brackish), which is handy if you're doing an estuary-style setup.
Panda Corydoras (Panda Cory)
Corydoras panda
Corydoras panda is a small, bottom-dwelling catfish known for its pale body with distinctive black patches over the eyes and near the tail, resembling a panda's markings. It is a peaceful, social schooling species that does best in groups and appreciates soft substrate and clean, well-oxygenated water. Like other corydoras, it forages constantly and should be offered sinking foods rather than relying on leftovers.
Panda loach
Yaoshania pachychilus
Hillstream loach from fast, highly oxygenated mountain streams; thrives in a mature, algae/biofilm-rich river-style aquarium with strong flow and smooth rocks. Peaceful but social, and best kept in groups where they become more active and confident.
Pantanal eartheater
Satanoperca pappaterra
This is one of those classic sand-sifting cichlids that will constantly take mouthfuls of substrate, filter out snacks, and spit out little clouds of sand like a tiny bulldozer. In the wild it even feeds in small groups and takes turns being the lookout, which is just insanely cool behavior for a cichlid. Give it a soft sandy bottom and calm tankmates, and it settles into a really mellow, busy little routine.
Pasca
Paragoniates alburnus
Paragoniates alburnus (often called the pasca) is a slim, silvery Amazon characin that tops out around 6-7 cm. Its vibe is very much "open-water, always on the move," so it does best in a roomy tank with a current and a group of its own kind.
Peacock gudgeon
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.
Pencil catfish
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.
Peridot tetra
Jupiaba acanthogaster
This is a small South American characin that does its best work in a real group - once you have a bunch of them together they stay active and hang in the midwater like classic dither fish. The neat little twist with this species is the spine-like pelvic bones that can stick forward along the belly, which is where the name comes from.