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.
Yellowfin Tuna
A sleek, fast-swimming tuna named for its long, bright yellow dorsal and anal fins, found in tropical and subtropical oceans worldwide.
pelagic
Whiptail Catfish
Whiptail Catfish are slender, armored South American catfish named for their long, tapering tail, often seen grazing algae along riverbeds.
freshwater
White Hake
White hake is a large, elongated cod relative of the western North Atlantic shelf and slope, larger and grayer than red hake, with long pelvic fin filaments.
saltwater
Tomtate
A small silvery grunt common over reefs and hard-bottom habitats of the western Atlantic, recognized by a dark blotch near the base of its tail fin.
reef
Texas Cichlid
The only cichlid native to the United States, this pearly, turquoise-spotted fish thrives in the rivers of Texas and northeastern Mexico.
freshwater
Staghorn Sculpin
A common bottom-dwelling sculpin of Pacific coast bays and estuaries, named for the large branching (antler-like) spine on its gill cover.
brackish
Sea Raven
A warty, spiny-headed sculpin of the northwestern Atlantic shelf, the Sea Raven can inflate its body with air or water as a defense when disturbed.
saltwater
Queenfish
A small, slender drum common in California bays and nearshore waters, notable for forming large, tightly packed schools near the surface.
saltwater
Green Tiger Barb
A green-toned color variant of the popular Tiger Barb, retaining the same bold dark bands and active, schooling nature as the classic orange form.
freshwater
Head and Tail Light Tetra
An Amazon and Guiana river characin named for its glowing metallic eye and tail-base spots, resembling a pair of tiny headlights.
freshwater
Gafftopsail Catfish
A silvery Atlantic sea catfish named for the tall, sail-like extension of its first dorsal fin ray and long trailing pectoral fin filaments.
saltwater
Flagtail Prochilodus
The Flagtail Prochilodus is a schooling South American river fish named for its bold red-and-black striped tail fin, which resembles a flag.
freshwater
Coral Hind
A vivid orange-red Indo-Pacific grouper scattered with pale iridescent-blue spots, commonly seen resting near coral heads and reef ledges.
reef
Common Skate
One of the largest skates in the world, now Critically Endangered after severe historical overfishing across its North Atlantic range.
cartilaginousCusk Eel
An elongated, eel-shaped deep-sea fish whose family holds the record for the deepest fish ever documented, recovered from a trench nearly 8,400 meters down.
deepsea
Colombian Tetra
A large, vividly rose-red characin native to northern Colombian rivers, notable for its bold coloration and confident schooling behavior.
freshwater
Chili Rasbora
One of the smallest cyprinids in the aquarium hobby, the Chili Rasbora is an intensely red nano fish native to Borneo's acidic blackwater swamps.
freshwater
Boeseman's Rainbowfish
Boeseman's Rainbowfish is a vividly two-toned freshwater fish from New Guinea, with a blue-violet front half and a fiery orange-yellow rear half.
freshwater
Atlantic Halibut
The Atlantic halibut is the largest flatfish species, a right-eyed flounder with a diamond-shaped body found on cold seabeds of the North Atlantic.
saltwater
Ballan Wrasse
The largest wrasse in northern European waters, a stout rocky-reef fish with highly variable green, brown, or reddish mottling.
saltwater
American Paddlefish
The American paddlefish is a primitive filter-feeding fish famous for its long, paddle-shaped snout, native to the Mississippi River basin of North America.
freshwater
American Plaice
A right-eyed flounder of the cold North Atlantic, identifiable by its rough scales, curved lateral line, and reddish-brown upper body.
saltwater
Balao
A slender, silvery halfbeak with a needle-like lower jaw that schools near the surface of warm Atlantic waters.
pelagic
Raccoon Butterflyfish
A round, orange-and-white butterflyfish with a black mask-like eye band, named for its raccoon-like facial markings.
reef