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.
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
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
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
Green Wrasse
A slender Mediterranean wrasse, often green to brownish, associated with seagrass meadows and rocky reefs.
saltwaterGreen Chromis
The Green Chromis is a small, shimmering blue-green damselfish that forms large schools hovering above branching coral heads on Indo-Pacific reefs.
reef
Green Scat
A green-toned color variant of the Spotted Scat, with the same deep, disc-shaped body but a more uniform olive-green wash and lighter spotting. Found in the same brackish estuaries and harbors across the Indo-Pacific.
brackish
Green Swordtail
The naturally colored, wild-type form of the swordtail, the green swordtail displays an olive-green body with a red-brown stripe and the species' signature elongated tail extension in males.
freshwater
Green Chromide
A deep-bodied cichlid from South Asian estuaries, olive-green with rows of shimmering pearly spots along its flanks. It is one of the largest brackish-water cichlids and an important species in coastal lagoon ecosystems.
brackish
Green Terror
A robust, iridescent-green South American cichlid whose bold turquoise spangling and feisty temperament earned it its combative common name.
freshwater
Green Sturgeon
The green sturgeon is the most marine-adapted North American sturgeon, ranging widely along the Pacific coast and entering rivers only occasionally to spawn.
saltwater
Green Jack
The Green Jack is a schooling eastern Pacific jack with a greenish-blue back, silvery sides, and yellowish lower fins, common in coastal surface waters.
pelagic
Green Neon Tetra
A Rio Negro blackwater characin closely related to the Neon Tetra, identified by its shimmering blue-green stripe and limited rear-body red coloration.
freshwater
Green Moray Eel
The Green Moray Eel is a large Atlantic reef eel whose apparent green color actually comes from a yellow mucus layer coating its naturally blue-grey skin.
reef
Green Tiger Barb
A green-toned color variant of the popular Tiger Barb, retaining the same bold dark bands and active, schooling nature as the classic orange form.
freshwater
Green Spotted Puffer
A small, popular aquarium puffer with a bright green, black-spotted back and white belly, native to brackish estuaries and mangrove creeks across Southeast Asia.
brackish
Blue Green Chromis
A small schooling damselfish with iridescent blue-green coloring, commonly seen in large groups hovering above branching coral on Indo-Pacific reefs.
reef
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
Greenland Cod
The Greenland cod is a stocky, cold-adapted cod relative found in shallow coastal Arctic waters around Greenland and eastern Canada, distinguished by its deep body and short head.
saltwaterTench
A robust, olive-green European fish with a thick, slimy skin and tiny scales, favoring weedy, still waters and long valued by anglers and pond keepers alike.
freshwater
Blue Acara
A hardy, adaptable South American cichlid with iridescent blue-green spangling, popular in aquariums for its calm temperament and manageable adult size.
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