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.
Whale Shark
The largest fish in the world, a gentle filter-feeding shark covered in a distinctive checkerboard pattern of pale spots and stripes, found in warm seas worldwide.
cartilaginousCeylon Killifish
An elongated, surface-dwelling killifish endemic to Sri Lanka, showing an orange-red body with fine dark speckling and iridescent scale flecking.
freshwaterViolet Goby
An eel-like burrowing goby with an iridescent violet-grey sheen and a large upturned mouth, found in muddy estuaries of the tropical Americas.
brackish
Two-Banded Clownfish
An orange anemonefish with two broad white bars, the characteristic clownfish of the Red Sea and adjacent Gulf of Aden reefs, always found sheltering among host anemones.
reef
Tompot Blenny
A large, bold blenny with elaborate branched eye tentacles, common on rocky reefs and harbor walls around the British Isles and Mediterranean.
saltwater
Spotfin Lionfish
A true lionfish with elongated, spotted pectoral fin rays and reddish-brown bars, found resting in reef crevices by day across the Indo-Pacific.
reef
Spangled Emperor
The spangled emperor is a large, pale grey-green emperor fish of the Indo-Pacific, marked by fine blue spangles on its scales and a strong, crushing jaw for cracking shellfish.
reef
Sepik Rainbowfish
A deep-bodied rainbowfish from the floodplain lakes and swamps of the Sepik River in Papua New Guinea, covered in unusually fine, numerous scales.
freshwater
Seahorse
An unmistakable upright-swimming fish with a horse-like head and curled prehensile tail, notable for males carrying and giving birth to offspring.
reef
Scrawled Filefish
The Scrawled Filefish is a large, thin-bodied filefish covered in unique blue and black scribbled lines and spots, found drifting near reefs in tropical seas worldwide.
reef
Sarpa Salpa
The sarpa salpa, or salema porgy, is a silvery sparid with golden stripes that grazes on algae over Mediterranean and eastern Atlantic reefs and seagrass beds.
reef
Salmon Shark
A powerful, warm-bodied mackerel shark closely related to the Porbeagle, built for speed in the cold North Pacific and named for its preference for salmon.
pelagic
Sawfish
A critically endangered ray with a long, tooth-lined snout resembling a saw, used to detect and strike schooling fish in shallow tropical waters.
cartilaginous
Ringtail Surgeonfish
A blue-grey Indo-Pacific tang identified by the narrow white ring encircling its tail base; common on coral and rocky reefs from East Africa to Hawaii.
reef
Reef Stonefish
The reef stonefish is the classic, rock-mimicking stonefish of coral reef flats, considered one of the most venomous fish in the sea and virtually invisible against reef rubble.
reef
Rockfish
Rockfish is a broad name for the roughly 100-plus Sebastes species of the North Pacific, spiny-finned, long-lived fish closely tied to rocky reefs and kelp forests.
saltwater
Porcupinefish
A spine-covered, inflatable reef fish found in warm seas worldwide; nocturnal and slow-moving, it shelters in reef crevices by day and forages for hard-shelled prey at night.
reef
Pouting
Also called bib, the Pouting is a deep-bodied, coppery-bronze gadoid common around rocky reefs and wrecks of the northeastern Atlantic and Mediterranean.
saltwater
Queen Parrotfish
A blue-green Caribbean parrotfish with a bold yellow band across the snout, commonly seen grazing algae along reef slopes and flats throughout the region.
reef
Pearl Danio
A slender, iridescent danio with a shifting pearly sheen of blue, pink, and gold along its flanks, native to fast-flowing Southeast Asian streams.
freshwater
Pacific Lamprey
The Pacific lamprey is a jawless, anadromous fish with a toothed sucking disc mouth, found along Pacific coastlines from Baja California to Japan and Alaska.
saltwater
Panther Grouper
An unmistakable Indo-Pacific grouper with a pale gray body covered in round black spots, a small head, and a distinctive humped, sloping forehead profile.
reef
Ohrid Trout
The Ohrid Trout is a salmonid endemic to Lake Ohrid on the border of North Macedonia and Albania, found nowhere else on Earth and now critically endangered in the wild.
freshwater
Olive Flounder
A large, muscular East Asian coastal flatfish with olive-brown mottled skin, a big toothy mouth, and eyes on its left side, also known as Japanese flounder.
saltwater