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.
Apache Trout
The Apache trout is a golden-yellow native trout found only in the high-elevation streams of Arizona's White Mountains, and it is the state fish of Arizona following decades of conservation recovery efforts.
freshwater
African Sharptooth Catfish
A hardy, air-breathing catfish native to Africa and the Middle East, capable of surviving in low-oxygen water and even moving briefly over land, now widely farmed and invasive elsewhere.
freshwater
American Gizzard Shad
A deep-bodied, blunt-snouted herring relative common in lakes and rivers across eastern and central North America, the American Gizzard Shad is a highly abundant forage fish named for its muscular, gizzard-like stomach.
freshwater
Aiptasia-eating Filefish
A small, drab Indo-Pacific filefish prized in reef aquariums for its habit of eating Aiptasia glass anemones, blending into seagrass and algae with mottled camouflage.
reef
Alligator Gar
A massive, armor-scaled freshwater fish with a broad alligator-like snout lined with two rows of sharp teeth, among the largest freshwater fish in North America.
freshwater
Alligator Pipefish
The alligator pipefish is a robust, seagrass-dwelling pipefish with a thick, ridged body and a short, somewhat prehensile tail tip, giving it a stouter, more alligator-like profile than typical slender pipefish.
saltwater
Amberjack
A powerful, deep-bodied jack that patrols reefs and wrecks worldwide in warm seas, known for its stubborn fighting strength and amber-tinted flanks.
reef
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
Arapaima
One of the largest freshwater fish in the world, this massive Amazonian species has thick armor-like scales and must surface periodically to breathe air.
freshwater
Anglerfish
A bizarre deep-sea predator that lures prey with a bioluminescent lure atop its head, adapted to life in total darkness at crushing ocean depths.
deepsea
American Flagfish
A stocky, deep-bodied killifish native to Florida, named for the red-and-blue striped, star-marked flank pattern of breeding males reminiscent of a flag.
freshwater
American Eel
The American Eel spends most of its life in North American rivers and estuaries before migrating once to the Sargasso Sea to spawn and die.
freshwater
Angel Shark
A flattened, ray-like shark that buries itself in sand to ambush passing fish, once widespread but now one of the most critically threatened sharks in Europe.
saltwater
African Tiger Fish
A ferocious, fast-swimming predator of southern and eastern African rivers, armed with prominent interlocking teeth and known for spectacular aerial strikes on prey.
freshwater
African Lungfish
An eel-like freshwater fish capable of breathing air and surviving months buried in dried mud during droughts, one of the most drought-resistant vertebrates known.
freshwater