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
Mini zebra loach
Yunnanilus pulcherrimus
This is a tiny Chinese stone loach with a really crisp, zebra-like stripe pattern, and it spends most of its time nosing around the bottom like a little aquatic mouse. It does best in a mature, well-oxygenated tank with lots of cover and smooth sand or rounded gravel so it can cruise and forage without beating up its barbels.
Moenkhausia aurantia
Moenkhausia aurantia
This is a little Brazilian Moenkhausia tetra described in 2011 from clear, shallow streams in the upper rio Tocantins basin. In the wild it turns up around rocky/sandy bottoms with riparian vegetation, and its name (aurantia) is literally a nod to an orangish tone. It is not a common aquarium fish, so most keepers end up treating it like a small, schooling South American tetra and focusing on stability and a calm setup.
Mojarita
Knodus breviceps
Knodus breviceps is a small freshwater characin from South America, reported from the Tocantins River basin. FishBase lists it as a benthopelagic freshwater species.
Mongolia bitterling
Rhodeus monguonensis
Rhodeus monguonensis is a little temperate bitterling from China, and its whole claim to fame (like other bitterlings) is the wild breeding trick of laying eggs into freshwater mussels. Its actual aquarium care is basically "cool, clean water and a planted setup," but the real challenge is that species-specific hobby info is scarce, so you end up keeping it like other Rhodeus and watching behavior closely.
Motatan pencil catfish
Trichomycterus motatanensis
Trichomycterus motatanensis is a little Venezuelan pencil catfish from the Lake Maracaibo basin area, the kind that likes hugging the bottom and poking around in crevices. Its not really a mainstream aquarium fish, so a lot of its exact care details in captivity are basically undocumented - if you ever ran into one, you would treat it like a cool-water, high-oxygen stream catfish and keep things super clean.
Mountain Erethistoides catfish
Erethistoides montana
This is a tiny little South Asian river catfish that lives down in fast, clean streamlets, where it hugs the bottom and lets the current do its thing. In a tank it is basically a stealthy pebble-cat that comes alive at feeding time, and it really appreciates lots of oxygen and places to tuck in.
Naked-bellied schizothorax
Schizothorax nudiventris
This is a high-altitude Asian river carp (a schizothoracine) from the upper Mekong (Lancang Jiang) drainage in China. It is built for cool, fast, oxygen-rich water, and adults develop that neat scaleless "naked" patch on the belly/thorax that the name nudiventris is calling out. Not really an aquarium trade fish - more of a wild river species that would need a big, cold, high-flow setup to thrive.
Neon Green Rasbora
Microdevario kubotai
This is that tiny, glassy-yellow fish that turns into a little green highlighter once it settles into an aquarium-especially over a dark substrate and under decent lighting. They're super active mid-water shoalers, and the whole group "flashing" that neon stripe together is the main event. Keep them in a proper group and they get way bolder and look a lot more intense.
Neon Tetra
Paracheirodon innesi
The Neon Tetra is a small, brightly colored fish known for its vibrant blue and red stripes that run the length of its body. It is a favorite among aquarists due to its striking appearance and peaceful nature. Neon Tetras are schooling fish that thrive in groups, adding a lively and colorful presence to any aquarium.
Neretva dwarf goby
Knipowitschia croatica
This is a tiny little freshwater goby from clear karst springs and slow waters in Croatia and Bosnia-Herzegovina, and it basically lives its whole life down on the bottom. The males guard eggs laid in little cavities under stones or shells, and the whole species is short-lived (under 2 years), so its behavior is way more "seasonal breeder" than "pet fish that lives forever."
Niulan Yunnan loach
Yunnanilus niulanensis
Yunnanilus niulanensis is a small freshwater stone loach (Nemacheilidae) described from the upper Niulanjiang River (a branch of the Jinsha River) in Songming County, Yunnan, China. It is characterized by large brown spots on the upper two-thirds of the body and head; aquarium availability and husbandry are not well-documented in authoritative sources.
Notched mud carp
Henicorhynchus entmema
This is a small river carp from the Mekong region that spends its life on the move - huge seasonal migrations, with the school basically "taking turns" leading as they push upstream. In the wild it is super important as forage for bigger fish, and it does best in a roomy tank with lots of swimming space and good oxygenation rather than a tiny community setup.