Search Species
Search for fish species by common or scientific name, or use filters to browse by water type, size, temperament, and difficulty.
Found 654 species
Peracuca
Kalyptodoras bahiensis
A chunky, armored doradid from Bahia, Brazil, this catfish cruises the bottom at night and uses those bony scutes like built‑in plating. It grows to about 10 inches and loves rooting around for crunchy inverts, so think sturdy decor and meaty sinking foods. Super cool if you are into rare, locality fish with a bit of mystery to their behavior.
Perak river sprat
Clupeichthys perakensis
Tiny, silvery river sprats that zip around midwater in tight groups and pick at zooplankton all day. They come from the Perak River system (and nearby peat-stained tributaries), top out at about 4 cm, and do best in soft, slightly acidic, well-oxygenated water with plenty of open swimming space. They are rarely seen in the hobby and tend to do best in big, settled shoals with fine live foods.
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.
Peruvian tetra
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.
Peterson's grenadier
Ventrifossa petersonii
Deepwater marine bathydemersal grenadier (family Macrouridae) from the Indian Ocean region; reported depth range about 296–1019 m (often ~350–700 m). Not a practical aquarium species due to deepwater capture/handling constraints and cold, dim habitat requirements.
Philippine cardinalfish
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.
Philippine croaker
Johnius philippinus
Johnius philippinus is a tiny little croaker from the Philippines (family Sciaenidae) that lives down near the bottom in marine water. Its known records are super limited (FishBase lists it only from the Davao Gulf area), so its real-life habits in the aquarium trade are basically a mystery - this is more of a scientific/market-fish kind of species than a home-aquarium fish.
Philippine halfbeak
Zenarchopterus philippinus
This is a tiny little surface-dwelling halfbeak from the Philippines that spends its time cruising the top like a mini garfish. The really cool part is its halfbeak vibe and livebearer-style family traits (Zenarchopteridae), so you get that constant "topwater hunter" behavior in the tank. Give it calm water up top, a tight lid (they jump), and lots of open swimming room.
Philippine slender flounder
Japonolaeops gracilis
Japonolaeops gracilis (syn. Laeops gracilis) is a marine bathydemersal lefteye flounder (Bothidae) recorded from sandy/muddy bottoms in deep water (reported roughly ~180-500 m; FishBase records ~197-216 m). Maximum size reported up to about 20 cm SL (also reported ~16-16.5 cm TL). It is a deepwater species and is not an established aquarium fish.
Pinafore goby
Drombus simulus
This is a tiny little drombus goby that hangs out on the bottom in tropical saltwater. It is one of those small, sandy-area gobies that tends to get overlooked because it is subtle rather than flashy, but it is a neat micro-predator for a calm marine setup. The big thing to know is there is basically no solid aquarium-focused care info published for it, so you treat it like a small wild goby and plan around its needs (sand, peaceful tankmates, and meaty foods).
Plains topminnow
Fundulus sciadicus
This is a little North American topminnow that hangs out near the surface and loves weedy edges, spring runs, and calm backwaters. When males are in breeding mode they get some really pretty iridescent fin color, but otherwise they are kind of subtle and "wild" looking in a cool way. Its not a seasonal killifish, so you are not dealing with the whole dry-season egg thing.
Point catfish
Aspidoras poecilus
Aspidoras microgalaeus is now treated as a junior synonym of Aspidoras poecilus, so care-wise you can think of it as that same tiny Aspidoras species. They are little bottom-scooters that do best in a group, and once they settle in you get that classic cory-style foraging and quick little dashy behavior over sand.