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.
Green Tiger Barb
A green-toned color variant of the popular Tiger Barb, retaining the same bold dark bands and active, schooling nature as the classic orange form.
freshwater
Gafftopsail Catfish
A silvery Atlantic sea catfish named for the tall, sail-like extension of its first dorsal fin ray and long trailing pectoral fin filaments.
saltwater
Flagtail Prochilodus
The Flagtail Prochilodus is a schooling South American river fish named for its bold red-and-black striped tail fin, which resembles a flag.
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
Emperor Tetra
A refined, violet-blue tetra from Colombia known for a bold black lateral stripe and males' elongated, sword-like central tail rays.
freshwater
Electric Ray
A round-bodied ray capable of generating a powerful electric shock from specialized organs, used to stun prey and deter predators.
cartilaginous
Colombian Tetra
A large, vividly rose-red characin native to northern Colombian rivers, notable for its bold coloration and confident schooling behavior.
freshwater
Cobia
A large, elongated, shark-like fish that roams warm coastal waters worldwide and often follows rays, turtles, and floating structure.
pelagic
Bluebanded Sea Bream
An Indo-Pacific reef fish, actually a snapper, marked by diagonal electric-blue bands on yellow and trailing fin filaments in adults.
reef
Celestial Pearl Danio
A tiny, jewel-like danio with a dark blue body covered in pearly spots and orange-red banded fins, discovered only in the mid-2000s in Myanmar.
freshwater
Celebes Rainbowfish
A slender, sail-finned rainbowfish endemic to Sulawesi, easily recognized by its tall, translucent dorsal and anal fins edged in black and yellow.
freshwater
Blackbarred Halfbeak
A silvery halfbeak marked with faint dark vertical bars, common over seagrass beds and reef flats across the Indo-Pacific.
reef
Black Molly
A solid-black, selectively bred color strain of the common molly, the black molly is one of the most recognizable and widely kept aquarium livebearers.
freshwater
Atlantic Blue Marlin
A massive, powerful billfish of the open Atlantic, known for its cobalt-blue back, silvery flanks, and a long spear-like bill used to stun prey.
pelagic
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.
brackish
American Plaice
A right-eyed flounder of the cold North Atlantic, identifiable by its rough scales, curved lateral line, and reddish-brown upper body.
saltwater
Slippery Dick
A common small western-Atlantic wrasse with two dark lateral stripes and a small dark spot at the tail base.
reef
Worm Pipefish
A tiny, tailless pipefish that hides among seaweed and rock-pool fronds along European rocky shores, resembling a thin brown worm more than a typical fish.
saltwater
Yellowtail
A streamlined, silvery jack with a distinctive yellow stripe running along its flanks and a yellow tail, found in temperate coastal waters worldwide.
pelagic
Wolf Cichlid
One of the largest Central American cichlids, this powerful predator combines vivid turquoise and orange coloration with formidable jaws.
freshwater
X-ray Tetra
A translucent coastal South American characin whose see-through body and bold black-white-yellow fin markings make it instantly recognizable.
brackish
Yellowfin Grouper
The yellowfin grouper is a reddish-brown to olive reef grouper of the Caribbean and western Atlantic, easily recognized by the bright yellow patch on its pectoral fins.
reef
Yellow Stingray
A small, boldly patterned stingray of the western Atlantic and Caribbean, often seen resting on sand near coral reefs and seagrass beds in shallow, clear water.
reef
White Seabass
The White Seabass is a large Pacific coast drum with a bluish-bronze back and silvery sides, closely associated with California's kelp forests.
saltwater