Search Species
Search for fish species by common or scientific name, or use filters to browse by water type, size, temperament, and difficulty.
Found 451 species
Banded Batasio
Batasio fasciolatus
This is a small hillstream bagrid catfish from the Tista drainage up in the Brahmaputra system. It spends a lot of time tucked under rocks and comes alive more at dusk and at night, so the more caves and crevices you give it, the more you will actually see it. The vertical banding is super sharp in good condition, and they really appreciate cool, oxygen-rich flow.
Banded dwarf three-barbel catfish
Nannoglanis fasciatus
This is a tiny little Ecuadorian heptapterid catfish with bold banding - a real under-the-radar oddball that almost never shows up in shops. Since there is basically no solid aquarium-care literature for it, I would treat it like a small, shy, bottom-hugging Amazon/upper Amazon tributary catfish: lots of cover, gentle flow, and clean, well-oxygenated water.
Banded Leporinus
Leporinus fasciatus
Banded Leporinus are those torpedo-shaped, black-and-yellow striped fish that look like they're wearing a little prison outfit-and they stay on the move. They've got a ton of personality and they're awesome to watch cruising and picking at stuff, but they're also the kind of fish that will redecorate your tank and "taste test" anything soft-looking.
Bandi cichlid
Wallaceochromis signatus
Wallaceochromis signatus is a West African (Guinea, Kolente basin/Bandi River) dwarf cichlid that has appeared in the hobby under trade names such as “Bandi I/Bandi 1” and “Guinea” prior to/alongside its formal description. It is a cave-associated dwarf cichlid; provide cover and caves and expect heightened territoriality during breeding.
Barred topminnow
Quintana atrizona
This is a tiny Cuban livebearer that likes to lurk in thick plants and do that classic livebearer "hover and peck" routine all day. The cool part is the subtle black barring and how the fish kind of vanishes into floating plants, then pops right back out when food hits the water.
Barrens topminnow
Fundulus julisia
Fundulus julisia is a rare Tennessee Barrens Plateau topminnow that lives near the surface in springs and spring-fed creeks, often around aquatic vegetation, feeding largely on small aquatic insects. It is federally listed as Endangered (U.S., 2019) and is the focus of captive propagation and reintroduction efforts.
Bates' labeobarbus
Labeobarbus batesii
This is a large freshwater African cyprinid (genus Labeobarbus) reported from Cameroon, Chad, and Gabon. It is not a commonly profiled aquarium species; husbandry information is limited in mainstream hobby references.
Bathybagrus platycephalus (claroteid catfish)
Bathybagrus platycephalus
This is a Lake Tanganyika claroteid catfish (Bathybagrus platycephalus; synonym Chrysichthys platycephalus) reported from deeper water (about 20-110 m) and associated with rocky substrate. It reaches ~22 cm TL and is a demersal predator, so small fish may be eaten if they fit in its mouth.
Bearded puffer
Pao barbatus
This is a chunky little Mekong River puffer that gets a cool "bearded" look from the dark spotting around the lips. It is one of those puffers that acts like a tiny water-dog - always watching you, always investigating, and always ready to crunch something shelled. Not a great community fish though, because puffers are basically curious biters with a beak.
Bearded shoveljaw carp
Onychostoma barbatum
Onychostoma barbatum is a freshwater cyprinid from China. Adults inhabit streams with gravel bottoms and reach about 17.6 cm standard length; aquarium care should emphasize high water quality and strong oxygenation typical of stream-dwelling cyprinids.
Betta
Betta splendens
Betta fish, also known as Siamese fighting fish, are popular for their striking colors and flowing fins. They are known for their territorial nature, especially males, which can display aggressive behavior towards each other.
Bigeye cichlid
Acaronia nassa
Acaronia nassa is that oddball Amazon cichlid with the huge eyes and a big, suction-style mouth - it is built to ambush little fish in dim, tannin-stained water. In the tank it is usually more chill than its predator vibe suggests, but anything that fits in its mouth is absolutely on the menu.