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
Parosphromenus linkei
This is one of those tiny, dark little gouramis that looks kind of understated in a store tank... until it settles in and the male starts flashing those deep reds and blues with the fancy fin edging. They're shy and a bit secretive, but when you keep them the way they like (soft, acidic, calm), they turn into these surprisingly bold little show-offs around spawning time.
Kryptopterus limpok
Kryptopterus limpok is a Southeast Asian sheatfish with really long maxillary barbels - FishBase notes they reach past the last quarter of the anal fin, so it has that "extra-whiskery" look. In the wild its a river/stream predator that eats small fish and also takes prawns and insect larvae, so think of it as a sleek, hunting-style catfish rather than a chill algae-picker.
Yasuhikotakia longidorsalis
This is one of those super-under-the-radar Mekong botia/loach species that you almost never see for sale. It stays fairly small (around 8 cm/3 inches max reported), but it still acts like a proper botiid - busy, social, and very into wedging itself under wood and rocks when it wants to chill.
Loricariichthys anus
This is one of the big Loricariinae whiptails - long, armored, and built to cruise the bottom and sift/suck up detritus. Males can develop a noticeably elongated lower lip in breeding season, and the whole genus is noted as facultative air-breathers, so they are pretty adaptable as long as the tank is clean and oxygenated.
Hyphessobrycon loweae
This is a tiny Upper Xingu tetra that can glow gold in the right light, with males showing that cool elongated dorsal fin. It does best when you keep a real group and give it a calm, planted setup so it feels bold enough to come out and color up.
Alosa macedonica
Landlocked shad endemic to northern Greece; formerly occurred in Lakes Volvi and Koronia but now restricted to Lake Volvi. Spawning occurs in summer (July–August) and begins around 19–20 °C.
Rhamdioglanis frenatus
Rhamdioglanis frenatus is a freshwater heptapterid catfish endemic to Brazil's Atlantic Forest coastal drainages (SE Atlantic). It reaches about 22 cm total length and is primarily carnivorous; in aquaria it is expected to appreciate ample shelter and floor space, though detailed species-specific husbandry data is scarce.
Julidochromis marlieri
Julidochromis marlieri is a rock-dwelling Lake Tanganyika cichlid with that awesome checkerboard pattern that looks like it was painted on. Give it a maze of rocks and tight caves and you will get to watch real cave-spawning, territory-guarding cichlid behavior up close. They can be absolute jerks to other Julidochromis, so plan the tank around that and they are a blast.
Maccullochella mariensis
Mary River cod is a big, thick-bodied Australian freshwater predator with that awesome dark mottled patterning and white-edged fins. Its basically a sit-and-wait ambush fish that likes deep pools and heavy cover (snags, undercut banks), and it gets way too large for normal home aquariums.
Julidochromis transcriptus
This is a little Lake Tanganyika rock-dweller with bold black-and-white striping and that cool dark "masked" face. Give it a pile of rocks and tight caves and it will cruise around like it owns the place, especially once it pairs up. Small fish, big attitude - but in a manageable, "fun to watch" way if you plan the tank around territories.
Synodontis matthesi
Synodontis matthesi is a chunky little African squeaker catfish from Tanzania's Rufiji River system that tops out around 12 inches. Expect a shy, cave-loving daytime hider that comes alive at feeding time, and like most Synodontis it can wedge itself into the tightest spot you thought was impossible.
Brycon medemi
Brycon medemi is a small-ish Brycon from Colombia's Atrato River basin. It is basically a streamlined, open-water characin with that classic Brycon look (built to cruise and grab food), but the hobby reality is: there is almost no solid aquarium-specific info published for this exact species, so you treat it like a fast, jumpy, river fish and give it space and clean water.