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.
Redear Sunfish
A deep-bodied sunfish named for the bright red-orange margin on its black ear flap, notable for its specialized diet of snails and other mollusks in warm southern lakes and ponds.
freshwater
Green Sunfish
A hardy, aggressive small sunfish with a large mouth and dark greenish-blue body marked with yellow-green flecking, tolerant of poor water conditions where few other sunfish can survive.
freshwater
Ocean Sunfish
The ocean sunfish is the heaviest bony fish alive, a flattened giant with no true tail that drifts through temperate and tropical seas feeding on jellyfish.
pelagic
Mola Mola
The heaviest bony fish in the world, an enormous, flattened, disc-shaped giant that appears to be missing a tail, often seen basking sideways at the ocean's surface.
pelagic
Pumpkinseed
A small, brilliantly colored sunfish with an orange-spotted body, blue-green facial streaks, and a distinctive red spot on the black ear flap, common in weedy ponds and lakes of eastern North America.
freshwater
Bluegill
A common North American sunfish recognized by its deep, rounded body and the dark blotch on its gill cover, widely found in lakes and ponds and popular with anglers.
freshwater
Rock Bass
A robust, bronze-colored sunfish relative with striking red eyes, often found around rocky cover in clear streams and lakes of eastern and central North America.
freshwater
Warmouth
A stocky, big-mouthed sunfish with red eyes and dark cheek streaks, at home in weedy, sluggish waters and swamps of the eastern United States.
freshwater
Greenland Shark
A massive, slow-moving Arctic shark believed to be the longest-lived vertebrate on Earth, with lifespans possibly exceeding 250 years.
deepsea
Montezuma Swordtail
A Mexican livebearer notable for the male's exceptionally long, trailing sword-shaped tail extension, among the longest relative to body size of any swordtail.
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
Slender Giant Moray
The longest of all moray eel species, this extremely elongated, olive-grey eel patrols muddy estuaries and mangrove channels across the Indo-Pacific rather than typical coral reef.
brackish