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.
Domino Damselfish
A hardy black damselfish marked with three bold white spots as a juvenile, named for its resemblance to a domino tile.
reef
Dog Salmon Herring
Despite the name, this is the chum salmon, nicknamed 'dog salmon' for its prominent canine-like spawning teeth — a true Pacific salmon, not a herring.
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
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
Almaco Jack
A deep-bodied jack with a tall, strongly notched dorsal fin and elongated fin lobes, commonly found around tropical reefs and offshore structure.
reef
Atlantic Saury
A slender, silvery, beaked fish of the open North Atlantic, closely related to needlefish, recognized by its elongated jaws and a row of small finlets near the tail.
pelagic
Atlantic Pollock
A fast, schooling North Atlantic gadid with a dark streamlined body and pale lateral line, often found swimming in open water over the shelf.
pelagic
Atlantic Salmon
An iconic anadromous fish of the North Atlantic, born in cold rivers, maturing at sea, and returning to natal streams to spawn.
freshwater
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
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
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.
reefCusk 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
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
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
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
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
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.
cartilaginous
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