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.
Piranha
A deep-bodied South American river fish famed for its sharp interlocking teeth and coordinated group feeding behavior, though most species are opportunistic scavengers.
freshwater
Blackstripe Topminnow
A slender freshwater killifish of the central and eastern U.S., identified by a single solid black stripe running from snout to tail. It inhabits quiet pools and slow stream reaches.
freshwater
Harlequin Rasbora
A small, deep-bodied freshwater fish with a coppery-orange body and a distinctive black triangular patch covering the rear half, native to the blackwater streams of Southeast Asia.
freshwater
Stingray
A flat, diamond-shaped cartilaginous fish that spends much of its time partly buried in sand on shallow tropical seafloors, related to sharks and equipped with a long, whip-like venomous-spined tail.
cartilaginous
Rummynose Tetra
A slender silvery tetra known for its bright red-orange snout and a bold black-and-white striped tail, prized for tight, synchronized shoaling.
freshwater
Cobia
A large, elongated, shark-like fish that roams warm coastal waters worldwide and often follows rays, turtles, and floating structure.
pelagic
Vermilion Rockfish
A vivid orange-red rockfish of Pacific coast reefs, often called 'red snapper' informally by anglers despite being unrelated to true snappers.
saltwater
Niger Triggerfish
A deep blue-green triggerfish with reddish teeth and a trailing crescent tail, often seen feeding on plankton above reef slopes.
reef
Sockeye Salmon
A Pacific salmon renowned for its brilliant crimson spawning coloration and strong dependence on lake habitat during its freshwater juvenile stage.
freshwater
Redlip Halfbeak
A slender coastal halfbeak with a needle-thin lower jaw tipped in vivid red, gliding in small schools over shallow tropical Indo-Pacific waters.
saltwater
Pacific Blackdragon
An eel-like deep-sea dragonfish whose females are entirely jet-black with a long chin barbel, while the tiny, non-feeding males look almost nothing like them.
deepsea
Flame Tetra
A Rio de Janeiro coastal stream characin with a graduated flame-like color pattern from silver at the head to red-orange at the tail.
freshwater
Common Sole
The common sole is a slender, right-eyed flatfish of European coastal waters, recognizable by its elongated oval body and small, curved mouth adapted for nighttime foraging.
saltwater
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
Greenland Halibut
A cold-water, deep-sea North Atlantic and Arctic flatfish with a dark body on both sides, a large toothy mouth, and a less flattened posture than typical flounders.
deepsea
Twinspot Wrasse
A large Indo-Pacific wrasse; juveniles are white with two red-and-black spots, while old males become bulky and greenish with a forehead hump.
reef
Thick-lipped Gourami
A small, hardy Myanmar labyrinth fish closely related to the Dwarf Gourami, distinguished by its noticeably thickened lips and reddish-blue diagonal banding in breeding males.
freshwater
Round Herring
Named for its unusually rounded, cylindrical body, the Round Herring is a schooling coastal pelagic fish found in temperate and subtropical seas worldwide, serving as an important forage species for larger predators.
pelagic
Blackbarred Halfbeak
A silvery halfbeak marked with faint dark vertical bars, common over seagrass beds and reef flats across the Indo-Pacific.
reef
Banded Pipefish
The banded pipefish is a slender reef fish patterned with bold reddish-brown and white rings along its entire body, ending in a fan-shaped yellow tail fin marked with a dark spot.
reef
Blackfin Tuna
The smallest member of the true tuna genus, this fast schooling fish sports a dark blue-black back and yellow, black-edged finlets, ranging through warm western Atlantic waters.
pelagic
Volitans Lionfish
A large, boldly banded lionfish with dramatic trailing fins, an ambush predator now invasive across the western Atlantic.
reef
Lionfish
A striking, striped reef predator native to the Indo-Pacific, now a widespread and ecologically disruptive invasive species across the Western Atlantic and Caribbean, easily recognized by its fan-like fins and venomous spines.
reef
Serpae Tetra
A vividly red-bodied tetra with a bold black shoulder patch, known for its assertive, nippy temperament within shoaling groups.
freshwater