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.
Undulate Ray
A patterned skate marked with wavy dark bands across its back, found on sandy and rocky bottoms from the English Channel to the Mediterranean and West Africa.
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.
cartilaginousTench
A robust, olive-green European fish with a thick, slimy skin and tiny scales, favoring weedy, still waters and long valued by anglers and pond keepers alike.
freshwater
Three-Spot Domino Damselfish
A round, jet-black damselfish marked with three white spots, commonly seen sheltering among sea anemones and branching corals on Indo-Pacific reefs.
reefSplake
Splake are a fertile hybrid char produced by crossing brook trout and lake trout, combining the fast growth of brook trout with the longevity and deep-water habits of lake trout.
freshwaterNaked Sole
A small, scaleless western Atlantic and Gulf sole with smooth skin, fine dark wavy crossbands, and a habit of burying in clean sand on the continental shelf.
saltwater
Steelhead
The anadromous, sea-run form of rainbow trout, prized by anglers for its powerful runs and acrobatic leaps after migrating between rivers and the Pacific Ocean.
freshwater
Steephead Parrotfish
A large Indo-Pacific parrotfish named for its abruptly steep, blunt forehead, typically seen grazing algae and reef rock along outer reef slopes in small groups.
reef
Spotted Seatrout
A slender estuarine predator of the southeastern United States, recognized by the bold black spots scattered across its silvery back and dorsal fin.
brackish
Spotted Eagle Ray
A striking, diamond-shaped ray covered in bright white spots on a dark back, known for graceful swimming and spectacular leaps above coral reefs.
reef
Southern Stingray
A large, diamond-shaped stingray commonly seen gliding over sandy flats of the Caribbean and western Atlantic, often partially buried in sediment.
cartilaginousSevruga
The sevruga, or starry sturgeon, is a slender anadromous sturgeon of the Caspian, Black, and Azov Sea basins, known for its long upturned snout and rows of star-shaped bony scutes.
brackish
Severum
A deep-bodied, disc-shaped Amazonian cichlid with subtle vertical banding and warm olive-gold coloration, popular for its calm temperament.
freshwater
Shortfin Molly
A hardy, adaptable livebearer native to Mexico and Central America, prized in the aquarium trade for its tolerance of varied water chemistry.
freshwater
Scopas Tang
A deep-bodied, disc-shaped surgeonfish usually seen in muted brown to gray tones, valued on reefs and in aquariums alike as an efficient, hardy algae grazer.
reef
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
Shortbill Spearfish
A slender billfish with an unusually short bill relative to its body, found in warm offshore waters worldwide and considered the smallest of the true spearfish.
pelagic
Sand Goby
A small, sand-colored goby common on shallow sandy seabeds and estuaries around northern Europe, distinguished by a dark spot at the base of its first dorsal fin.
brackishSailfin Flyingfish
A small, two-winged flyingfish with a tall, sail-like dorsal fin and blunt snout, found gliding over warm coastal and offshore surface waters worldwide.
pelagic
Red Gurnard
A reddish-pink bottom-dweller of European seas, the Red Gurnard has an armored head and finger-like pectoral rays it uses to walk and sense prey along the seafloor.
saltwater
Rock Bass
A robust, bronze-colored sunfish relative with striking red eyes, often found around rocky cover in clear streams and lakes of eastern and central North America.
freshwater
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
Rosy Loach
The Rosy Loach is a tiny, delicately colored nano loach from Myanmar's slow-moving, vegetated streams and pools, prized for its diminutive size and rosy-pink hues.
freshwaterRock Gunnel
A slender, eel-like intertidal fish of the North Atlantic, the Rock Gunnel hides under rocks and seaweed and is marked by a row of pale-ringed spots along its dorsal fin.
saltwater