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.
Goonch Catfish
A massive, mottled bottom-dwelling catfish of South and Southeast Asian rivers, capable of growing to enormous size in deep river pools below rapids.
freshwater
Firemouth Cichlid
A Central American cichlid famous for the fiery red-orange throat it flares open to intimidate rivals during territorial disputes.
freshwater
Freshwater Drum
The Freshwater Drum is the only entirely freshwater member of the drum family, recognized by its humpbacked silvery body and tail-extending lateral line.
freshwater
European Plaice
European plaice is a right-eyed flatfish easily recognized by the vivid orange spots scattered across its smooth brown upper side.
saltwater
Deep-sea Smelt
A small, silvery-bodied deep-sea fish that drifts through the dark midwater zone feeding on tiny plankton, forming a key link in deep ocean food webs.
deepsea
Cookiecutter Shark
A small, cigar-shaped deep-sea shark known for gouging round cookie-shaped plugs of flesh from much larger animals, including whales and other sharks.
deepsea
Coho Salmon
A mid-sized Pacific salmon known as silver salmon for its bright, metallic ocean coloration, popular among anglers for its aggressive strikes.
freshwater
Clown Knifefish
A knife-shaped Southeast Asian fish with a distinctive row of large black eyespots along its rear body and a long, continuous ventral fin.
freshwater
Canary Rockfish
A vivid orange-and-gray rockfish of the Pacific continental shelf, easily recognized by its bright orange fins and mottled orange-and-gray body pattern.
saltwater
Bonnethead Shark
The smallest hammerhead species, easily recognized by its smooth, shovel-shaped head, common in shallow coastal waters of the Americas.
cartilaginous
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
Bronze Corydoras
A hardy, metallic-sheened armored catfish that forages along the substrate and is one of the most widely kept bottom-dwelling aquarium fish.
freshwater
Bigeye Trevally
A large, silvery-to-black reef jack famous for forming massive, swirling daytime schools around Indo-Pacific reef passes and drop-offs.
reef
Black Skirt Tetra
A silvery-gray tetra with a flowing black skirt-like tail and fins, whose dark coloration typically fades somewhat as the fish matures.
freshwater
Black Marlin
A massive, powerful billfish of the Indo-Pacific known for its rigid, immovable pectoral fins and status as one of the largest bony fish in the ocean.
pelagic
Springer's Damselfish
A small, dramatic black damselfish with two vivid electric-blue stripes running along the top of its body, found on shallow reefs of the Philippines and Indonesia.
reef
Suckermouth Catfish
A heavily armored South American catfish with a disc-shaped sucking mouth used to graze algae from rocks and wood, one of the most familiar aquarium fish worldwide.
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
Cinnamon Clownfish
A deep reddish-orange clownfish with dark shading across the body and a single white head bar, living among sea anemones on coral reefs of the western Pacific.
reef
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
Yellow-edged Moray
One of the largest reef morays, marked with an intricate maze-like pattern and a bright yellow-edged dorsal fin, hiding by day in rocky and coral crevices.
reef
Yellowbelly Damselfish
A small blue-grey damselfish with a bright yellow underside, found sheltering around coral and rubble on shallow reefs of the western Pacific.
reef
Zebra Loach
A small, boldly striped South Indian loach with fine dark vertical bands, popular in aquariums for its compact size and peaceful, social behavior.
freshwater
Wahoo
One of the fastest fish in the ocean, the Wahoo is a slender, torpedo-shaped predator with iridescent blue-green tiger stripes, found in warm seas worldwide.
pelagic