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.
Green Terror
A robust, iridescent-green South American cichlid whose bold turquoise spangling and feisty temperament earned it its combative common name.
freshwater
Pygmy Angelfish
A tiny deep-blue western-Atlantic dwarf angelfish with a bright yellow-orange face.
reef
Potter's Angelfish
A small Hawaiian endemic dwarf angelfish, rusty orange with blue-grey and fine wavy blue lines.
reef
Lemonpeel Angelfish
A small, bright yellow Pacific dwarf angelfish with a blue ring around the eye and blue edging on the fins.
reef
Bicolor Angelfish
A vivid dwarf angelfish split sharply into a bright yellow front half and deep blue rear half, a favorite of reef aquarists.
reef
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
Thick-lipped Gourami
A small, hardy Myanmar labyrinth fish closely related to the Dwarf Gourami, distinguished by its noticeably thickened lips and reddish-blue diagonal banding in breeding males.
freshwater
Coral Beauty Angelfish
The Coral Beauty Angelfish is a small dwarf angelfish with a deep purple-blue body and orange-yellow scale highlights, widely distributed across Indo-Pacific reefs.
reef
Flame Angelfish
The Flame Angelfish is a small, vivid orange-red dwarf angelfish marked with black vertical bars and blue-tipped fins, commonly seen darting among reef crevices in the Pacific.
reef
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
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