Fish Encyclopedia
Search and identify 1,000+ fish species — freshwater, saltwater, reef, and pelagic — with habitat, size, diet, behavior, and how to tell them apart.
Electric Yellow Cichlid
A vividly yellow mbuna cichlid endemic to Lake Malawi's rocky shorelines, popular in aquariums for its bright, almost uniform coloration and relatively peaceful temperament.
freshwater
Kribensis
A small, colorful West African dwarf cichlid best known for the vivid magenta belly females display, especially during courtship.
freshwater
Bolivian Ram
A hardier, calmer cousin of the German Blue Ram, this South American dwarf cichlid sports a soft gray-gold body with a ruby-edged dorsal fin.
freshwater
Orange Chromide
A small, bright orange-yellow cichlid from South Asian estuaries, marked by a single dark spot near the tail. It is the smallest member of its genus and a popular, peaceful aquarium fish.
brackish
Pygmy Swordtail
One of the smallest members of the swordtail genus, this diminutive Mexican livebearer lacks the elongated tail sword typical of its larger relatives.
freshwater
Uaru
A large, deep-bodied Amazonian cichlid known for a dramatic color change with age, from a striped juvenile pattern to a mottled brown adult, and for a rare parenting behavior in which parents feed their fry a body-slime secretion.
freshwaterMiller Lake Lamprey
The Miller Lake lamprey is a tiny, non-parasitic jawless fish historically restricted to a single lake and its tributary streams in Oregon, one of the smallest lamprey species known.
freshwater
Zebra Mbuna
One of the most iconic Lake Malawi cichlids, the zebra mbuna is highly variable in color across populations but typically shows bold barring, and it forms the basis for one of the aquarium hobby's most popular mbuna groups.
freshwater
Neon Rainbowfish
A small, brilliantly colored rainbowfish from New Guinea whose males flash iridescent blue-violet when displaying to rivals or mates.
freshwater
Frontosa
A striking striped cichlid from Lake Tanganyika, notable for the bulging cranial hump adult males develop above their eyes.
freshwater
Sterlet
The sterlet is the smallest widespread sturgeon species, a slender freshwater fish of Ponto-Caspian rivers known for its long, thin, upturned snout with fringed barbels.
freshwater
Zebra Turkeyfish
A dwarf lionfish species boldly striped in reddish-brown and white, with broad, fan-like pectoral fins used to corner small prey against reef rubble.
reef
Pygmy Corydoras
The Pygmy Corydoras is one of the smallest armored catfish species, a tiny schooling fish native to slow-moving tributaries of the Amazon basin.
freshwater
Jack Dempsey
A robust Central American cichlid named after a boxing champion for its feisty temperament, known for iridescent blue-green speckling that develops as it matures.
freshwater
Sparkling Gourami
A tiny, jewel-like Southeast Asian gourami covered in iridescent blue-green spangling and reddish stripes, small enough to be one of the smallest gouramis kept in aquariums.
freshwater
Least Killifish
One of the smallest vertebrates in North America, the least killifish is a tiny livebearer native to slow, vegetated wetlands of the southeastern United States despite its misleading name.
freshwater
Honey Gourami
A small, peaceful South Asian labyrinth fish whose breeding males flush a warm honey-gold to orange color with a dark throat and belly, making it a popular gentle community fish.
freshwater
Ember Tetra
A tiny, glowing orange-red tetra that shoals in large numbers and is among the smallest characins kept in freshwater aquaria.
freshwater
Oscar
A large, intelligent South American cichlid known for its bold personality, striking mottled coloration, and a dark false eyespot near the base of its tail.
freshwater
Rosy Loach
The Rosy Loach is a tiny, delicately colored nano loach from Myanmar's slow-moving, vegetated streams and pools, prized for its diminutive size and rosy-pink hues.
freshwater
Tanganyika Goby
A small, goby-shaped cichlid endemic to Lake Tanganyika's rocky shallows, grazing algae from wave-washed rocks and instantly recognizable by its blunt head and bottom-hugging posture.
freshwater
Green Chromide
A deep-bodied cichlid from South Asian estuaries, olive-green with rows of shimmering pearly spots along its flanks. It is one of the largest brackish-water cichlids and an important species in coastal lagoon ecosystems.
brackish
Otocinclus
A tiny suckermouth catfish that spends most of its time grazing algae and biofilm from surfaces in slow-moving South American waters.
freshwaterFlowerhorn
A vividly colored, artificially bred cichlid hybrid famous for its bulbous head hump and bold markings, with no wild ancestral population.
freshwater