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.
Clown Loach
A brightly colored, boldly striped Indonesian freshwater fish popular in aquariums, notable for its social, playful behavior and slow growth to a surprisingly large adult size.
freshwater
Brook Silverside
A slender, nearly translucent freshwater fish of eastern North American lakes and rivers, known for its needle-like beak and habit of skipping across the water's surface.
freshwater
Atlantic Mackerel
A fast-swimming schooling fish with iridescent blue-green wavy stripes across its back, found in cold and temperate waters on both sides of the North Atlantic.
pelagic
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
Yellowtail Amberjack
A powerful, streamlined jack marked by a bold yellow lateral stripe and yellow tail, roaming temperate and subtropical waters worldwide around reefs, wrecks, and open water.
pelagic
Waspfish
A camouflaged, spiny bottom-dweller with fan-like pectoral fins and a mottled reddish-brown pattern, resting on sand or rubble near reefs across the Indo-Pacific.
saltwater
Tautog
A large, robust, dark-mottled wrasse tied closely to rocky reefs and wrecks along the western Atlantic coast, known for its powerful shellfish-crushing jaws.
saltwater
Streaked Spinefoot
A large silvery-gray rabbitfish marked with fine dark streaks and scattered pale spots, commonly found in estuaries, mangroves, and coastal reefs across the Indo-Pacific.
brackish
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
Rock Cook
A tiny olive-brown wrasse of northeastern Atlantic kelp reefs, the Rock Cook forages among rocks and crevices and can change sex during its lifetime.
saltwater
Pollack
Pollack is a streamlined cod relative of the northeastern Atlantic, found around rocky reefs and wrecks, identified by its curved lateral line and protruding lower jaw with no barbel.
saltwater
Ling
The ling is a long, eel-shaped member of the cod family found on deep rocky reefs of the northeastern Atlantic, distinguished by its elongated fins and single chin barbel.
saltwater
Lesser Amberjack
A small, deep-dwelling jack of the western Atlantic, distinguished from its larger amberjack relatives by its modest size and life around offshore reefs and wrecks.
saltwater
Gilthead Bream
A deep-bodied Mediterranean and Eastern Atlantic sparid named for the golden band across its forehead. A euryhaline species that moves between coastal reefs and brackish lagoons.
saltwater
Coral Beauty Angelfish
The Coral Beauty Angelfish is a small dwarf angelfish with a deep purple-blue body and orange-yellow scale highlights, widely distributed across Indo-Pacific reefs.
reef
Cinnamon Clownfish
A deep reddish-orange clownfish with dark shading across the body and a single white head bar, living among sea anemones on coral reefs of the western Pacific.
reef
Clown Goby
A tiny, bright yellow goby that lives permanently nestled among the branches of Acropora corals on Indo-Pacific reefs, rarely straying from its host colony.
reef
Blue Rockfish
A schooling rockfish with dark blue-gray coloring, commonly seen in large numbers around kelp forests and rocky reefs along the Pacific coast of North America.
saltwater
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
Tuna
A fast, powerfully built open-ocean fish capable of high-speed sustained swimming, ranging across warm and temperate seas worldwide in large migratory schools.
pelagicMexican Lamprey
The Mexican lamprey is a jawless fish endemic to freshwater rivers of the central Mexican highlands, one of the few lamprey species found so far south in North America.
freshwater
Topsmelt
A slender, silvery schooling fish common in bays, estuaries, and kelp beds along the eastern Pacific coast, often seen shoaling near the surface in large numbers.
saltwaterShort-headed Lamprey
The short-headed lamprey is an anadromous, jawless fish of southeastern Australia and Tasmania, recognized by its notably short head and a marine parasitic phase before spawning in rivers.
brackish
Russian Sturgeon
The Russian sturgeon is a large, critically endangered anadromous fish of the Caspian, Black, and Azov Sea basins, known for its short blunt snout and robust armored body.
brackish