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.
Java Rabbitfish
A greenish-brown rabbitfish patterned with fine wavy vermiculated markings, commonly found in mangrove-lined estuaries and brackish coastal waters of the Indo-Pacific.
brackish
Guineafowl Pufferfish
The Guineafowl Pufferfish is a variably colored reef puffer, most often dark brown to black with small white spots, resembling the plumage of a guineafowl bird.
reef
Hogchoker
A small, tough-skinned estuarine sole tolerant of fresh to salt water, with a mottled brown crossbanded body, rounded outline, and no visible pectoral fins.
brackish
California Scorpionfish
A mottled reddish-brown scorpionfish of the California coast, camouflaged against rocky and sandy bottoms and equipped with venomous spines along its dorsal fin.
saltwater
Senorita
A slender, golden-brown kelp forest wrasse of the California coast known for its cleaning behavior, picking parasites off larger fish such as sheephead.
saltwater
Lemon Sole
A thick-bodied northeastern Atlantic flatfish with smooth, slippery, mottled reddish-brown skin, a small mouth, and a preference for firm sand or gravel seabeds.
saltwater
Grey Gurnard
A bottom-dwelling gurnard with an armored, pale-spotted grey-brown back and large bluish pectoral fins, common across sandy shelf waters of Europe.
saltwater
Gag Grouper
The gag grouper is an elongated, grey-brown grouper of the western Atlantic recognized by its faint worm-like markings and slender build compared to other groupers.
reef
Speckled Hind
A reddish-brown to blackish western Atlantic grouper densely covered in small pale blue-white spots, giving rise to its nickname the "strawberry grouper."
deepsea
Petrale Sole
A slender, plain light-brown northeastern Pacific flatfish, more closely related to flounders than true soles, favoring sandy continental shelf bottoms.
saltwater
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
California Halibut
A large, active eastern Pacific flatfish with a big toothy mouth, uniform brown coloration, and an unusual mix of left- and right-eyed individuals within the species.
saltwaterWitch Flounder
A slender, tongue-shaped deep-water North Atlantic flatfish with plain grayish-brown coloration, fine scales, and a preference for cold muddy shelf and slope bottoms.
deepsea
Tiger Grouper
The tiger grouper is a slender reef grouper of the tropical western Atlantic marked with diagonal dark bars on a pale to reddish-brown body, resembling tiger-like striping.
reef
Sixline Soapfish
A dark brown-black Indo-Pacific reef fish marked with six pale horizontal stripes, known for secreting a bitter, toxic skin mucus as a defense mechanism.
reef
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
Goliath Grouper
One of the largest bony fish on Atlantic reefs, the goliath grouper is a massive, mottled brown ambush predator that shelters around wrecks, caves, and mangrove-lined shorelines.
reef
Chestnut Lamprey
The chestnut lamprey is a freshwater parasitic lamprey of central North America named for its reddish-brown coloration, native to Mississippi and Great Lakes basin rivers and lakes.
freshwater
Antarctic Cod
Antarctic cod is a bottom-dwelling notothenioid fish of the Southern Ocean, adapted to near-freezing water and recognized by its mottled brown, camouflaged body and broad head.
saltwater
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
Waspfish
A camouflaged, spiny bottom-dweller with fan-like pectoral fins and a mottled reddish-brown pattern, resting on sand or rubble near reefs across the Indo-Pacific.
saltwater
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
Rex Sole
A slender, deep-dwelling northeastern Pacific flatfish notable for unusually long pectoral fins and plain light brown coloration on cold continental shelf and slope bottoms.
deepsea
Flathead Catfish
A massive, flat-headed catfish with a mottled yellow-brown body and a protruding lower jaw, known for its solitary, ambush-predator lifestyle in large river systems.
freshwater