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.
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
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
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
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
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
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
Mediterranean Flyingfish
The most common flyingfish of the Mediterranean Sea, with long, mottled pectoral fins and a slender body built for gliding above coastal pelagic waters.
pelagic
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
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
Oarfish
An extraordinarily long, silver, ribbon-shaped deep-sea fish with a red crest and trailing fin rays, rarely seen alive at the surface and among the longest bony fish known.
deepsea
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
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
Jardini Arowana
A large, metallic-scaled arowana from northern Australia and New Guinea, known for its bronze-green body and upward-facing mouth built for surface feeding.
freshwater
Mexican Tetra
A resilient silvery tetra native to Texas and Mexico, renowned for cave populations that lost their eyes and pigment through evolution in total darkness.
freshwater
Lined Surgeonfish
A boldly striped blue, black, and yellow tang that fiercely defends algal-turf patches on shallow, wave-exposed reef crests across the Indo-Pacific.
reef
Longtail Tuna
A coastal tuna of the Indo-West Pacific with a notably slender, elongated body and a long, low second dorsal fin, often found closer to shore than other tunas.
pelagic