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 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
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
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
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
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
Atlantic Croaker
The Atlantic Croaker is a silvery-bronze estuarine fish with a single chin barbel and faint wavy mottling, abundant along the western Atlantic coast.
brackishAtlantic Silverside
A slender, schooling coastal fish common along the western Atlantic shoreline, marked by a bright silver stripe running down each flank.
brackish
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
Wahoo
One of the fastest fish in the ocean, the Wahoo is a slender, torpedo-shaped predator with iridescent blue-green tiger stripes, found in warm seas worldwide.
pelagic
Shovelnose Sturgeon
The shovelnose sturgeon is the smallest and most abundant North American sturgeon, a slender river fish with a flattened snout and a thin whip-like tail filament.
freshwater
Mola Mola
The heaviest bony fish in the world, an enormous, flattened, disc-shaped giant that appears to be missing a tail, often seen basking sideways at the ocean's surface.
pelagic
Flounder
A flatfish with both eyes on its upper side that lies camouflaged against sandy or muddy bottoms, ambushing small fish and invertebrates that pass overhead.
saltwater
Golden Wonder Killifish
A golden-orange color form of the striped panchax, this hardy topminnow patrols the water's surface hunting insects and small fish in South Asian wetlands.
freshwater
European Sea Bass
The European sea bass is a sleek, silvery predator common along European and North African coasts, prized by anglers as a hard-fighting sport fish.
saltwater