Search Species
Search for fish species by common or scientific name, or use filters to browse by water type, size, temperament, and difficulty.
Found 456 species
Seerussling
Vimba elongata
Vimba elongata (Seerussling) is a temperate European cyprinid from the Danube basin, especially alpine lakes in southern Bavaria and Upper Austria. It is a slim, silvery bottom-forager that roots around for small benthic critters, more like a wild "nase/bream" vibe than a typical colorful aquarium fish.
Serpae Tetra
Megalamphodus eques
Serpaes are those fiery little red tetras with the black "comma" behind the gill-super eye-catching in a planted tank. They're active and a bit spicy, so they do best in a real group where they'll squabble with each other instead of nipping slower tankmates. When they're settled in, you get this constant cruising-and-chasing vibe that makes the tank feel really alive.
Sete Quedas eartheater
Gymnogeophagus setequedas
This is a smaller South American eartheater cichlid from the Parana River basin, and its vibe is classic Gymnogeophagus: cruising the bottom, picking at the substrate, and doing that cool biparental fry-guarding thing. It stays under 4 inches, but it still acts like a real cichlid when pairing up, so giving it space and some structure matters.
Seven khramulya
Capoeta capoeta
Capoeta capoeta is a big, streamy scraper-barb from western Asia that spends a lot of its time cruising rivers and grazing on plant matter. Think of it like a coldwater-ish, current-loving algae grazer that gets way too large and active for most typical community tanks.
Sheepshead swordtail
Xiphophorus birchmanni
A wild swordtail from eastern Mexico that loves fast, splashy streams and shows off bold vertical bars and a big, yellow-speckled dorsal. Males barely carry a sword at all, which always surprises folks, but they make up for it with tons of personality when kept in a roomy, well-oxygenated tank.
Short Zaireichthys (dwarf loach catfish)
Zaireichthys brevis
Zaireichthys brevis is a tiny little African loach catfish from the Congo River basin - think "micro catfish" that spends its time down on the bottom. Its wild habitat is sandy stretches of big river, so it tends to appreciate fine sand and some rocks/cover, and it is more of a look-and-enjoy species than an interactive pet.
Short-bodied white-armored fish
Onychostoma breve
Onychostoma breve is a small river carp from the Yangtze River system in China, topping out around 14.6 cm standard length. Its whole vibe is a streamlined, current-loving minnow that wants lots of oxygen and moving water, so it is way happier in a river-style setup than a typical calm community tank.
Short-sword platyfish
Xiphophorus continens
Xiphophorus continens is a tiny little wild-type livebearer from the Rio Panuco drainage in Mexico, and the males have just a short "stub" sword instead of the big flowing one you see on common swordtails. They really shine in a planted, oxygen-rich tank with some current, where you can watch the males do their low-key "sneaker" style mating behavior and the females quietly cruise the plants.
Sicklefin redhorse
Moxostoma ugidatli
This is a big, river-dwelling redhorse sucker from the southern Appalachians, and that crazy tall, sickle-shaped dorsal fin is what gives it away. Its Cherokee name (ugidatli, "it wears a feather") is straight-up perfect when you see the profile, and its whole vibe is clean, cool, fast water with lots of oxygen.
Silver loach
Yasuhikotakia lecontei
Yasuhikotakia lecontei is a chunky, fast-water botia from the Mekong area that loves to wedge itself into rock gaps by day and come out to cruise and forage at dusk. It is a real little bulldozer with snails and other bottom critters, and it gets way more confident (and entertaining) when you keep it in a proper group.
Silver Tip Tetra
Hasemania nana
These little guys are like tiny sparks in the tank-silvery bodies with those warm orange "copper" fins that really pop when they're happy and colored up. Keep them in a proper group and you'll see them cruise around together, doing that classic tetra "we're all going this way now" thing, and the males will sometimes flash at each other without it turning into real drama.
Similis annual killifish
Simpsonichthys similis
Simpsonichthys similis is a small Brazilian annual killifish from temporary pools in the São Francisco River basin. Like other annual rivulids, it spawns in the substrate; the eggs develop in a dry medium (diapause) and hatch on re-wetting. Adults are small (roughly 3–6 cm), and the species is best handled as a short-lived, breeding-focused project.