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.
Pacific Bluefin Tuna
A massive, warm-bodied tuna capable of ocean-basin migrations across the entire North Pacific, recognized by its deep, torpedo-shaped body and short pectoral fins.
pelagic
Indo-Pacific Sailfish
The Indo-Pacific sailfish is a large, streamlined billfish famed for its towering, sail-like dorsal fin and status as one of the fastest fish in the ocean.
pelagic
Rockfish
Rockfish is a broad name for the roughly 100-plus Sebastes species of the North Pacific, spiny-finned, long-lived fish closely tied to rocky reefs and kelp forests.
saltwater
Malabar Grouper
The Malabar grouper is a large, olive-grey Indo-Pacific grouper covered in dark blotches and small pale spots, found across coastal reefs, estuaries, and mangrove-lined coasts.
reef
Grouper
A heavy-bodied reef predator with a large mouth and mottled camouflage pattern, known for lying in wait near reef structure before ambushing fish and crustaceans.
reef
Comet Grouper
A pale grayish-brown Indo-Pacific grouper marked with elongated, comet-shaped pale streaks and spots, along with faint dark bands radiating from the eye.
reef
China Rockfish
Easily recognized by a bold yellow stripe running down its black body, the China rockfish is a small, secretive reef dweller of the northeastern Pacific.
saltwater
Potato Grouper
The potato grouper is one of the largest reef groupers, a pale grey fish covered in dark blotches resembling potato skin, found on Indo-Pacific reefs and known for its curious, approachable behavior toward divers.
reef
Black Rockfish
A dark, deep-bodied schooling rockfish common over rocky reefs and kelp forests along the Pacific coast, often seen in large surface-oriented aggregations.
saltwater
Burbot
The burbot is the only fully freshwater member of the cod family, an eel-shaped, mottled predator found in cold lakes and rivers across the Northern Hemisphere.
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
Panther Grouper
An unmistakable Indo-Pacific grouper with a pale gray body covered in round black spots, a small head, and a distinctive humped, sloping forehead profile.
reef
Salmon Shark
A powerful, warm-bodied mackerel shark closely related to the Porbeagle, built for speed in the cold North Pacific and named for its preference for salmon.
pelagic
Green Sturgeon
The green sturgeon is the most marine-adapted North American sturgeon, ranging widely along the Pacific coast and entering rivers only occasionally to spawn.
saltwaterJapanese Sardine
A schooling pelagic fish abundant in the waters around Japan, the Japanese Sardine undergoes dramatic multi-decade population cycles and forms one of the largest single-species biomasses in the northwest Pacific.
pelagic
Sailfish
One of the fastest fish in the ocean, instantly recognizable by its towering, sail-like dorsal fin and elongated spear-like upper jaw used to slash through schools of prey.
pelagic
Sailfin Tang
A striped surgeonfish famous for its oversized, sail-like dorsal and anal fins, common on Indo-Pacific coral reefs.
reef
Dover Sole
The Dover sole is a slippery-skinned, right-eyed flatfish of the North Pacific, unusual among soles for living on deep continental slope bottoms far offshore.
deepsea
Kawakawa
A compact, fast schooling tuna of the Indo-Pacific with a wavy dark pattern on its back and several distinctive dark spots between the pectoral and pelvic fins.
pelagic
White Sturgeon
The white sturgeon is the largest freshwater fish in North America, an armored, long-snouted giant found in Pacific coast rivers from California to British Columbia.
freshwater
Blue Marlin
A massive, cobalt-blue billfish with a long spear-like bill, the Blue Marlin is one of the fastest and largest predators of the open tropical ocean.
pelagic
Walleye Pollock
Walleye pollock is an abundant, schooling cod relative of the North Pacific, identified by its slender silvery body, speckled back, protruding lower jaw, and forked tail.
pelagic
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
Pollock
A streamlined, greenish-bronze cod relative that schools around rocky reefs and wrecks in the northeastern Atlantic, told apart from cod by its protruding lower jaw and lack of a chin barbel.
saltwater