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.
Blue Ling
A slender, deep-water relative of the cod, the Blue Ling lives along northeastern Atlantic continental slopes and forms dense spawning aggregations at specific deep-sea sites.
deepsea
Bridled Burrfish
A small Caribbean burrfish with fixed, non-erectile spines and a pale body marked with fine dark reticulations and scattered blotches, often resting motionless among seagrass.
reefBlue Gularis
One of the largest African killifish, males display an elongated lyre-shaped tail and vivid blue-green body with red barring, native to Nigerian and Cameroonian wetlands.
freshwater
Blonde Ray
A large European skate named for its pale, sandy coloration, recognized by prominent eye-like spots near the base of each pectoral fin and a preference for sandy coastal seabeds.
cartilaginous
Blue Shark
A slender, wide-ranging oceanic shark with a striking indigo-blue back, long pointed pectoral fins, and large eyes, found throughout temperate and tropical open oceans worldwide.
cartilaginous
Antarctic Cod
Antarctic cod is a bottom-dwelling notothenioid fish of the Southern Ocean, adapted to near-freezing water and recognized by its mottled brown, camouflaged body and broad head.
saltwater
Banded Rainbowfish
A highly variable, boldly patterned rainbowfish from northeastern Australia, often showing multiple dark horizontal stripes and vivid regional color forms.
freshwater
Bay Pipefish
The bay pipefish is a long, slender pipefish common in eelgrass beds and estuaries along the Pacific coast of North America, closely matching the green-brown color and shape of the eelgrass blades it hides among.
brackish
Atlantic Cod
A large, heavy-bodied bottom fish with a distinctive chin barbel and three dorsal fins, the Atlantic Cod is one of the North Atlantic's most historically significant and heavily studied fish species.
saltwater
Banded Killifish
A slender, silvery killifish common in vegetated lakes and slow streams of eastern North America, marked with numerous thin dark vertical bars along its flanks.
freshwater
Alaska Pollock
An abundant, silvery schooling fish of the cold North Pacific and Bering Sea, closely related to Atlantic Cod and among the most numerous commercially significant fish in the world.
saltwater
Achilles Tang
A striking black surgeonfish with a bold orange-red teardrop marking near its tail and matching scalpel-like tail spine. It inhabits high-surf reef zones across the Pacific.
reef
Arctic Cod
Arctic cod, or polar cod, is a small, ice-associated Gadidae found throughout the circumpolar Arctic, recognized by its slender body, deeply forked tail, and role as the region's key forage fish.
pelagic
Zebra Moray
The Zebra Moray is a striped Indo-Pacific reef eel with blunt, peg-like teeth specialized for crushing crabs, mollusks, and sea urchins.
reef
Yoyo Loach
A patterned South Asian loach whose silvery body is marked with dark lines that form Y- and X-shaped patterns, giving rise to its common name.
freshwater
Warmouth
A stocky, big-mouthed sunfish with red eyes and dark cheek streaks, at home in weedy, sluggish waters and swamps of the eastern United States.
freshwater
White Perch
A silvery, deep-bodied temperate bass rather than a true perch, common in brackish estuaries and coastal rivers of eastern North America.
brackish
Valentini Puffer
The Valentini Puffer is a small reef puffer marked by two bold black saddle patches on a white-and-tan body, a pattern also mimicked by an unrelated filefish.
reefTiger Trout
Tiger trout are a sterile hybrid between brown trout and brook trout, prized by anglers for their striking maze-like markings and aggressive feeding habits.
freshwater
Sterba's Corydoras
A popular armored catfish with a spotted body and bright orange pectoral fins, native to river tributaries along the Brazil-Bolivia border.
freshwaterCorvina
A large silvery weakfish native to the Gulf of California, best known by its bright orange mouth lining and countershaded body.
saltwaterFlowerhorn
A vividly colored, artificially bred cichlid hybrid famous for its bulbous head hump and bold markings, with no wild ancestral population.
freshwater
Tarpon
A giant, silver-scaled fish known as the 'Silver King,' famous for its acrobatic leaps and its ability to gulp air at the surface in low-oxygen coastal waters.
brackish
Snowflake Moray
The Snowflake Moray is a mottled black-and-yellow reef eel with blunt, crushing teeth adapted for feeding on crabs and shrimp rather than fish.
reef