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.
South American Lungfish
An eel-shaped South American fish that breathes almost entirely through a single lung, allowing it to survive dry seasons buried in mud.
freshwater
Ocean Sunfish
The ocean sunfish is the heaviest bony fish alive, a flattened giant with no true tail that drifts through temperate and tropical seas feeding on jellyfish.
pelagic
Pallid Sturgeon
The pallid sturgeon is a large, pale, endangered fish of the Missouri and Mississippi rivers, adapted to fast, turbid water with a flattened snout and reduced eyes.
freshwater
Pelagic Stingray
A uniquely oceanic stingray that never touches the seabed, drifting through warm and temperate seas worldwide while feeding on squid and small fish.
pelagic
Florida Pompano
A deep-bodied, silvery fish with a forked tail and yellow-tinged fins, common in sandy surf zones along the western Atlantic coast.
saltwater
Goldfish
A hardy freshwater fish domesticated from the wild Prussian carp, prized worldwide as an ornamental pond and aquarium species in many color forms.
freshwater
Caspian Lamprey
The Caspian lamprey is a parasitic, jawless fish that lives in the brackish Caspian Sea and migrates into tributary rivers of Russia, Iran, and neighboring countries to spawn.
brackish
Common Roach
A widespread European freshwater fish with a silvery body and distinctive red-orange fins, forming large shoals in slow rivers, lakes, and canals.
freshwater
Black Marlin
A massive, powerful billfish of the Indo-Pacific known for its rigid, immovable pectoral fins and status as one of the largest bony fish in the ocean.
pelagic
Black Skirt Tetra
A silvery-gray tetra with a flowing black skirt-like tail and fins, whose dark coloration typically fades somewhat as the fish matures.
freshwater
Atlantic Sturgeon
The Atlantic sturgeon is a large, armored anadromous fish of eastern North America, spending years at sea before returning to coastal rivers to spawn.
brackish
Threespot Dascyllus
A robust black-bodied damselfish bearing three white spots in youth, one of the most widespread dascyllus species on Indo-Pacific reefs.
reef
Chalk Bass
A tiny bicolored sea bass with a lavender-blue head and orange rear body, often seen darting over Caribbean rubble reefs.
reef
Conger Eel
The Conger Eel is the largest eel in European waters, a strictly marine species inhabiting rocky reefs and wrecks across the northeastern Atlantic and Mediterranean.
saltwater
Allen's Damselfish
A slender, iridescent blue damselfish with a bright yellow tail, native to reefs of the Coral Triangle and known for its striking two-tone coloration.
reef
Vermiculated Angelfish
A small pygmy-group angelfish with a bold yellow head, blue-black body etched with fine wavy vermiculated blue lines, commonly seen darting around coral rubble on Indo-Pacific reefs.
reef
Silver Bream
A silvery European freshwater fish with notably large, protruding eyes, often confused with young Common Bream but distinguished by its larger scales.
freshwater
Shanny
The most common rockpool blenny of the northeastern Atlantic, the Shanny is a stout, big-eyed fish that tolerates the harsh, fluctuating conditions of the intertidal zone.
saltwater
Sawfish
A critically endangered ray with a long, tooth-lined snout resembling a saw, used to detect and strike schooling fish in shallow tropical waters.
cartilaginous
Red Drum
The Red Drum is a coppery-bronze coastal fish of the western Atlantic and Gulf of Mexico, best known for the dark eyespot near its tail.
brackish
Japanese Eel
The Japanese Eel is an East Asian catadromous fish that migrates from freshwater rivers to offshore Pacific spawning grounds, and is now classified as Endangered.
freshwater
Common Dragonet
A sand-dwelling northeastern Atlantic fish with striking sexual dimorphism, males growing a dramatically elongated dorsal fin and long tail streamers.
saltwater
Bloodfin Tetra
A slim silvery tetra with bright red fins, prized as a hardy, active schooling fish that tolerates cooler water than most tropicals.
freshwater
Banded Gourami
A hardy South Asian labyrinth fish known for its diagonal orange-blue stripes and ability to gulp air in oxygen-poor water.
freshwater