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.
Northern Pike
A long, torpedo-shaped ambush predator with a duck-bill-like snout and light bean-shaped markings, famous for lurking motionless in weeds before striking prey with explosive speed.
freshwater
Longhorn Sculpin
A large, spiny-headed sculpin common on sandy and rocky seafloors along the northwest Atlantic coast, easily recognized by its oversized head and fan-like pectoral fins.
saltwater
Kryptopterus
A small, almost entirely transparent Southeast Asian catfish whose internal skeleton and organs are visible through its glass-like body, popular in the aquarium trade.
freshwater
Grunt Sculpin
A small, oddly shaped sculpin with an elongated, beak-like snout and orange-and-brown striped body, famous for mimicking the appearance of an empty giant acorn barnacle shell.
saltwater
Chain Pickerel
A slender, elongated ambush predator with a distinctive dark chain-like pattern over green sides, common in weedy lakes and sluggish rivers of the eastern United States.
freshwater
Chain Moray
A dark, boldly patterned moray with a yellow chain-like network across its body, often seen in shallow tide pools and rocky Caribbean shorelines even outside water at low tide.
reef
Blonde Ray
A large European skate named for its pale, sandy coloration, recognized by prominent eye-like spots near the base of each pectoral fin and a preference for sandy coastal seabeds.
cartilaginous
Bichir
The bichir is a primitive, air-breathing freshwater fish of African rivers and swamps, genus Polypterus, known for its snake-like armored body and spiny dorsal finlets.
freshwater
African Lungfish
An eel-like freshwater fish capable of breathing air and surviving months buried in dried mud during droughts, one of the most drought-resistant vertebrates known.
freshwater
Atlantic Needlefish
A long, slender silvery fish with a needle-like toothy beak, common in coastal and estuarine waters of the western Atlantic where it hunts small fish near the surface.
brackish
Marlin
A large, powerful open-ocean billfish with a long rounded spear-like bill and a tall crested back, prized as one of the ocean's fastest and most sought-after game fish.
pelagic
Zebra Turkeyfish
A dwarf lionfish species boldly striped in reddish-brown and white, with broad, fan-like pectoral fins used to corner small prey against reef rubble.
reef
Yellow-edged Moray
One of the largest reef morays, marked with an intricate maze-like pattern and a bright yellow-edged dorsal fin, hiding by day in rocky and coral crevices.
reef
Viperfish
The viperfish is a deep-sea predator famous for its oversized, needle-like fangs and a light-tipped dorsal fin ray used as a lure in the dark mesopelagic zone.
deepsea
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.
freshwaterSailfin 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.
saltwaterRock 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
Prickly Sculpin
A large freshwater sculpin of Pacific coast rivers and lakes, named for the tiny prickle-like scales scattered along its sides, and among the largest members of its genus.
freshwater
Mbu Pufferfish
The Mbu Pufferfish is the largest freshwater pufferfish species, native to Central Africa's Congo River system and known for its maze-like yellow body markings.
freshwater
Flowery Flounder
An Indo-Pacific reef-associated flatfish densely covered in small blue rings and spots, giving a flower-like pattern, with both eyes on its upper left side.
reef
European Grayling
The European grayling is a slender salmonid famous for its tall, sail-like, iridescent dorsal fin, found in cold, clear rivers and lakes across much of Europe.
freshwater
Combtail Gourami
A robust Sri Lankan gourami named for the comb-like fringe along its dorsal, anal, and tail fins, more aggressive and predatory than most smaller gourami relatives.
freshwater
Black Phantom Tetra
A gray-black Paraguay basin characin known for its dramatic sail-like dorsal fin displays and mild social hierarchy behavior among males.
freshwater