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.
Koi
Ornamental color varieties of the Amur carp, selectively bred in Japan for centuries into hundreds of red, white, black, and gold patterns kept in decorative ponds worldwide.
freshwater
Kokanee Salmon
Kokanee are a landlocked, non-migratory form of sockeye salmon that spend their entire life in freshwater lakes, turning bright red during their autumn spawning run into tributary streams.
freshwater
Coney
The coney is a small, color-variable reef grouper of the tropical western Atlantic, occurring in reddish-brown, bicolor, or bright golden-yellow forms, always marked with fine blue spotting.
reef
California Sheephead
A large sequential-hermaphrodite wrasse of California and Baja kelp forests, with males showing a striking black-and-red pattern and prominent canine teeth used to crush hard-shelled prey.
reefCeylon Killifish
An elongated, surface-dwelling killifish endemic to Sri Lanka, showing an orange-red body with fine dark speckling and iridescent scale flecking.
freshwater
Yellowfin Grouper
The yellowfin grouper is a reddish-brown to olive reef grouper of the Caribbean and western Atlantic, easily recognized by the bright yellow patch on its pectoral fins.
reef
Oarfish
An extraordinarily long, silver, ribbon-shaped deep-sea fish with a red crest and trailing fin rays, rarely seen alive at the surface and among the longest bony fish known.
deepsea
Lake Wanam Rainbowfish
A deep-bodied rainbowfish endemic to the small crater Lake Wanam in Papua New Guinea, with males showing rich orange-red body coloration.
freshwater
Leopard Coral Grouper
A striking Indo-Pacific reef predator with a reddish-orange body densely covered in small electric-blue spots, giving it a leopard-like pattern.
reef
Dog Snapper
A robust, coppery-red Western Atlantic snapper named for its prominent canine teeth, identified by a pale triangular patch beneath the eye.
reef
Coelacanth
The coelacanth is an ancient, deep-dwelling lobe-finned fish once known only from fossils, famously rediscovered alive off South Africa in 1938.
deepsea
Catalina Goby
A tiny, vividly colored goby with electric blue bands over a red-orange body, found perched on rocky reefs and kelp holdfasts off the Pacific coast.
reef
Barred Halfbeak
A schooling, seagrass-associated halfbeak of the Indo-Pacific with a long, red-tipped lower jaw and faint dark bars along its silvery flanks.
saltwater
Spotted Scorpionfish
A heavily camouflaged reef fish with mottled brown, red, and white patterning and venomous dorsal spines, blending seamlessly into coral rubble and rocky bottom across the western Atlantic.
reef
Longsnout Seahorse
A slender, long-snouted seahorse native to the western Atlantic that anchors itself to soft corals and mangrove roots with its prehensile tail. It comes in a wide range of colors, from yellow and orange to red and black.
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
Vermilion Snapper
A slender, vivid pinkish-red snapper of deep offshore reefs and hard bottom, feeding mainly on plankton picked from the water column rather than the substrate.
reef
Longnose Hawkfish
A red-and-white lattice-patterned hawkfish with an unmistakable elongated snout, perched motionlessly on gorgonian sea fans across the Indo-Pacific.
reef
Tiger Grouper
The tiger grouper is a slender reef grouper of the tropical western Atlantic marked with diagonal dark bars on a pale to reddish-brown body, resembling tiger-like striping.
reef
Tub Gurnard
The largest common European gurnard, with a reddish armored body and enormous, brilliantly blue-green pectoral fins that it spreads when disturbed.
saltwater
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
Rainbow Killifish
A vividly patterned annual killifish from Mozambique's seasonal floodplain pools, with males displaying a rainbow of red, blue and orange scale colors.
freshwater
Dwarf Gourami
A small, colorful labyrinth fish from South Asia, with males displaying vivid diagonal red and blue stripes, popular in the freshwater aquarium trade.
freshwaterCommon Minnow
A small, active cyprinid of cool, clean streams, the common minnow forms dense shoals over gravel, and breeding males develop vivid red bellies and bright spawning colors.
freshwater