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.
Reticulated Hillstream Loach
The Reticulated Hillstream Loach is a flat, disc-shaped fish from Vietnamese mountain streams, patterned with an intricate net-like design and adapted to cling to rocks in swift current.
freshwater
Pollock
A streamlined, greenish-bronze cod relative that schools around rocky reefs and wrecks in the northeastern Atlantic, told apart from cod by its protruding lower jaw and lack of a chin barbel.
saltwater
Spotted Wolffish
A large, deep-water wolffish covered in bold dark spots, found in cold Arctic and North Atlantic waters on rocky and gravel seafloor.
deepsea
Atlantic Wolffish
A large, eel-like cold-water fish with powerful crushing jaws, sheltering solitarily in rocky dens across the North Atlantic.
saltwater
Poor Cod
The poor cod is a small, golden-brown Gadidae common around rocky reefs and harbors of the northeastern Atlantic and Mediterranean, identified by its short chin barbel and dark pectoral-fin blotch.
saltwater
Dusky Grouper
The dusky grouper is a large, dark brownish-grey grouper native to rocky reefs of the Mediterranean and eastern Atlantic, once heavily depleted by spearfishing and now a conservation priority in parts of its range.
reef
Hillstream Loach
A flattened, disc-bodied loach adapted to cling to rocks in fast mountain streams, using its wide fanned fins as a natural suction system.
freshwater
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
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
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
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
Great Sculpin
One of the largest sculpin species, with a heavily armored, spiny head and mottled brown body, found along rocky and muddy bottoms of the cold North Pacific.
saltwater
Garibaldi
A large, brilliant orange damselfish and the official marine state fish of California, found among rocky reefs and kelp forests of the temperate northeast Pacific.
reef
European Conger
A large, powerfully built grey eel that shelters in rocky crevices and shipwrecks across the Northeast Atlantic and Mediterranean, among the largest eel species in the region.
saltwater
Cunner
A small, cold-hardy wrasse with highly variable coloring, found on rocky reefs and kelp beds along the western Atlantic and known for becoming dormant in winter.
saltwater
Wolf Eel
The Wolf Eel is a large, spotted, eel-shaped fish of North Pacific rocky reefs that forms long-term pairs and cooperatively guards its eggs in a shared den.
saltwater
Tautog
A large, robust, dark-mottled wrasse tied closely to rocky reefs and wrecks along the western Atlantic coast, known for its powerful shellfish-crushing jaws.
saltwater
Ling
The ling is a long, eel-shaped member of the cod family found on deep rocky reefs of the northeastern Atlantic, distinguished by its elongated fins and single chin barbel.
saltwater
Greater Pipefish
One of Europe's largest pipefish, the Greater Pipefish is a long, tube-snouted relative of the seahorse found among seagrass and rocky shallows from Scandinavia to the Mediterranean.
saltwater
Suckermouth Catfish
A heavily armored South American catfish with a disc-shaped sucking mouth used to graze algae from rocks and wood, one of the most familiar aquarium fish worldwide.
freshwater
Redbanded Seabream
The redbanded seabream is a deep-bodied, pinkish-red sparid marked by four to five dark vertical bands, found over rocky and sandy bottoms in the eastern Atlantic and Mediterranean.
saltwater
Pacific Red Snapper
A bright reddish-pink snapper of rocky reefs along the Eastern Pacific coast from Mexico to Peru, closely resembling its Atlantic namesake but found in a different ocean.
reef
Pollack
Pollack is a streamlined cod relative of the northeastern Atlantic, found around rocky reefs and wrecks, identified by its curved lateral line and protruding lower jaw with no barbel.
saltwater
Red Grouper
The red grouper is a heavy-bodied, reddish-brown reef fish common on rocky and coral bottoms of the Gulf of Mexico and western Atlantic, known for excavating shallow depressions in sediment.
reef