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.
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
Spined Loach
The Spined Loach is a small, striped bottom-dweller named for the tiny erectile spine beneath each eye, found in slow-moving European and Asian waters.
freshwater
Red Devil Cichlid
A bold, thick-lipped Nicaraguan cichlid known for its fiery orange-red or white coloration and famously feisty, combative temperament.
freshwater
Rummynose Tetra
A slender silvery tetra known for its bright red-orange snout and a bold black-and-white striped tail, prized for tight, synchronized shoaling.
freshwater
Scooter Dragonet
A small, mottled reef-associated dragonet that rests on sand near coral reefs and moves in short scooting hops rather than continuous swimming.
reef
Saddleback Clownfish
A dark, saddle-marked clownfish that shelters among the tentacles of large sea anemones on sandy reef slopes and lagoons across the Indo-Pacific.
reef
Sebae Clownfish
A dark brown clownfish with a bold yellow tail and two white body bars, native to reefs of the northern Indian Ocean and closely tied to the sebae sea anemone.
reef
Scissortail Rasbora
A slender silver rasbora named for its striking black-and-white tail markings that open and close in a scissor-like motion while swimming.
freshwater
Ram Cichlid
A small, dazzlingly colorful South American dwarf cichlid prized for its violet-blue iridescence and peaceful, pair-bonding nature.
freshwater