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.
Midas Cichlid
A large, variably colored Central American cichlid, ranging from mottled gray to solid gold-orange, known for its bold and often combative nature.
freshwater
White Hake
White hake is a large, elongated cod relative of the western North Atlantic shelf and slope, larger and grayer than red hake, with long pelvic fin filaments.
saltwater
Convict Tang
A pale gray surgeonfish marked with six or seven bold black vertical bars, resembling a prisoner's uniform, that grazes algae in large schools.
reef
Caribbean Reef Shark
The most commonly encountered large shark on Caribbean reefs, a stocky gray requiem shark often seen resting motionless on the sea floor.
reef
Black Skirt Tetra
A silvery-gray tetra with a flowing black skirt-like tail and fins, whose dark coloration typically fades somewhat as the fish matures.
freshwater
Lake Trout
A large, deep-lake char native to cold northern North American waters, marked by pale spots on a dark greenish-gray body and a deeply forked tail. It typically inhabits the coldest, deepest zones of large lakes.
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
Bolivian Ram
A hardier, calmer cousin of the German Blue Ram, this South American dwarf cichlid sports a soft gray-gold body with a ruby-edged dorsal fin.
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
Blackspotted Puffer
The Blackspotted Puffer, also called the dog-faced puffer, is a small reef pufferfish with a gray, yellow, or blue body scattered with a few large dark spots.
reef
Barramundi Cod
The Australian common name for the panther grouper, a pale gray, black-spotted reef grouper instantly recognizable by its small head and steeply humped forehead.
reef
Streaked Spinefoot
A large silvery-gray rabbitfish marked with fine dark streaks and scattered pale spots, commonly found in estuaries, mangroves, and coastal reefs across the Indo-Pacific.
brackish
Blue Rockfish
A schooling rockfish with dark blue-gray coloring, commonly seen in large numbers around kelp forests and rocky reefs along the Pacific coast of North America.
saltwater
Knight Goby
A small, boldly patterned goby from Southeast Asian estuaries, pale gray-white with scattered black spots and blotches along its slender body. It perches on the bottom, propped on its fused pelvic fins, watching for small prey.
brackish
Orangeshoulder Tang
A gray-bodied surgeonfish marked by a bold orange patch behind the gill cover, often seen grazing sandy rubble zones adjacent to Indo-Pacific coral reefs.
reef
Blue Catfish
North America's largest catfish species, silvery-blue to slate gray with a deeply forked tail, native to the Mississippi basin and now established as an invasive predator in several Atlantic drainages.
freshwater
Blonde Naso Tang
A striking unicornfish with a gray body, black-and-yellow facial markings, and a bright yellow blaze along the back, best known in the aquarium trade as the Indian Ocean's 'blonde' color form.
reef
Unicornfish
A large gray-brown surgeonfish named for the forward-pointing bony horn projecting from its forehead, an important herbivore grazing tough brown algae on Indo-Pacific reef flats.
reef
Basking Shark
The world's second-largest fish, a massive gray-brown filter feeder recognized by its enormous gaping mouth and huge gill slits, often seen basking at the surface in cool temperate seas.
cartilaginous