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.
Serpae Tetra
A vividly red-bodied tetra with a bold black shoulder patch, known for its assertive, nippy temperament within shoaling groups.
freshwaterAnthias
A small, brightly colored basslet that forms large shimmering schools over reef drop-offs, feeding on drifting plankton.
reef
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
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
Kribensis
A small, colorful West African dwarf cichlid best known for the vivid magenta belly females display, especially during courtship.
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.
brackishFlowerhorn
A vividly colored, artificially bred cichlid hybrid famous for its bulbous head hump and bold markings, with no wild ancestral population.
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
Green Terror
A robust, iridescent-green South American cichlid whose bold turquoise spangling and feisty temperament earned it its combative common name.
freshwater
Cardinal Tetra
A tiny, jewel-toned freshwater fish with an iridescent blue stripe running the length of its body above a vivid red stripe below, native to the blackwater tributaries of the Amazon.
freshwater
Endler's Livebearer
A tiny, dazzlingly colorful relative of the guppy discovered in a handful of Venezuelan lagoons, the Endler's livebearer is prized by aquarists for its metallic, jewel-toned males.
freshwater
Celestial Pearl Danio
A tiny, jewel-like danio with a dark blue body covered in pearly spots and orange-red banded fins, discovered only in the mid-2000s in Myanmar.
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
Electric Blue Hap
One of the most vividly colored Lake Malawi haplochromine cichlids, males display an intense electric-blue body that makes this predatory species a standout among the lake's rock-dwelling cichlids.
freshwater
Peacock Bass
A powerful, brilliantly colored cichlid from South America, prized for its golden-green flanks, dark vertical bars, and the distinctive eyespot at the base of its tail.
freshwater
Severum
A deep-bodied, disc-shaped Amazonian cichlid with subtle vertical banding and warm olive-gold coloration, popular for its calm temperament.
freshwater
Blue Acara
A hardy, adaptable South American cichlid with iridescent blue-green spangling, popular in aquariums for its calm temperament and manageable adult size.
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
Angelfish
A tall, laterally flattened cichlid from the Amazon basin, prized in the aquarium hobby for its striking triangular fin profile and extensive range of bred color varieties.
freshwater
Discus
A round, flattened Amazonian cichlid prized for its vivid patterns and colors, considered one of the most striking freshwater aquarium fish and a demanding species to keep well.
freshwater
Nile Tilapia
A deep-bodied African cichlid with bold stripes on its tail fin, the Nile tilapia is one of the world's most widely distributed freshwater fish through aquaculture and introductions.
freshwater
Cuckoo Catfish
A spotted African catfish from Lake Tanganyika famous for a brood-parasitic strategy in which it sneaks its own eggs into the mouths of incubating cichlids.
freshwater
Mozambique Tilapia
A hardy, deep-bodied cichlid native to southeastern Africa, the Mozambique tilapia tolerates a huge range of salinities and temperatures and has become one of the world's most widely introduced freshwater fish.
freshwater
Lawnmower Blenny
The Lawnmower Blenny is a mottled brown-and-cream reef fish with a stocky body and comb-like teeth, known for grazing algae off rock and rubble surfaces on shallow Indo-Pacific reefs.
reef