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.
Blue Gourami (Three Spot Gourami)
A hardy, adaptable Southeast Asian labyrinth fish named for the two dark spots along its flank that, combined with the eye, form a "three spot" pattern; the wild form is blue-grey with darker mottling.
freshwater
Molly
A hardy, adaptable livebearer native to Mexico and Central America, the common molly thrives in fresh, brackish, and even marine water and is one of the most popular beginner aquarium fish.
freshwater
Mahseer
A powerful, large-scaled carp of fast Himalayan rivers, the golden mahseer is prized as one of the hardest-fighting freshwater fish, with a thick, muscular body built for holding in strong current.
freshwater
Slippery Dick
A common small western-Atlantic wrasse with two dark lateral stripes and a small dark spot at the tail base.
reef
Picasso Triggerfish
A boldly patterned triggerfish with geometric blue, yellow, and black markings, common on shallow Indo-Pacific reef flats.
reef
Sailfin Tang
A striped surgeonfish famous for its oversized, sail-like dorsal and anal fins, common on Indo-Pacific coral reefs.
reef
Bonnethead Shark
The smallest hammerhead species, easily recognized by its smooth, shovel-shaped head, common in shallow coastal waters of the Americas.
cartilaginous
Spotted Croaker
A large Indo-Pacific drum with scattered dark spots along its silvery back, common in turbid estuaries and river mouths.
brackish
Pacific Blue-eye
A tiny, schooling fish common in coastal streams and estuaries of eastern Australia, easily recognized by its reflective, luminous blue eyes.
brackish
White Perch
A silvery, deep-bodied temperate bass rather than a true perch, common in brackish estuaries and coastal rivers of eastern North America.
brackish
Southern Kingfish
A slender, uniformly silvery drum common in surf zones from the mid-Atlantic to the Gulf of Mexico, lacking the bold barring of its relatives.
saltwater
Sandbar Shark
A robust, migratory requiem shark named for its very tall, triangular first dorsal fin, common in coastal nursery bays worldwide.
cartilaginous
Thornback Ray
A common European skate covered in distinctive rows of sharp thorny spines, found on sandy and muddy seabeds from shallow water to the continental shelf.
cartilaginous
Round Stingray
A small, round-bodied stingray common in shallow sandy surf zones along the Pacific coast, notable for large seasonal aggregations in warm bays.
cartilaginous
Mangrove Snapper
A grayish snapper common along mangrove shorelines and estuaries of the western Atlantic, showing a faint dark stripe through the eye and a pointed, angular head.
brackish
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
Bull Rout
Known as the shorthorn sculpin elsewhere, the Bull Rout is a camouflaged, spiny-headed fish common in cold North Atlantic tide pools and rocky shores.
saltwater
Blue-spotted Stingray
A small, brilliantly patterned stingray common on Indo-Pacific coral reefs, instantly recognizable by its electric-blue spots and blue-striped tail.
reef
Bogue
The bogue is a slender, silvery schooling sparid common throughout the Mediterranean and eastern Atlantic, feeding on plankton, algae, and small invertebrates in open coastal water.
saltwater
Bar Jack
A sleek, blue-green jack with a dark stripe along its back and a black-and-white striped tail, common on Caribbean and western Atlantic reefs.
reef
Azure Damselfish
A small, vividly blue damselfish common on Indo-Pacific reef flats and lagoons, easily spotted flitting among coral rubble in loose groups.
reef
Klein's Butterflyfish
A golden-brown Indo-Pacific butterflyfish with a dark eye bar and dusky patches, common on many reefs.
reef
Rock Goby
A small, mottled goby common in rocky tide pools along European and North African coasts, easily spotted darting between rocks at low tide.
saltwater
Jaguar Cichlid
A large, powerfully built Central American predator whose irregular black leopard-like blotches over a pale body give it its common name.
freshwater