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.
Alligator Gar
A massive, armor-scaled freshwater fish with a broad alligator-like snout lined with two rows of sharp teeth, among the largest freshwater fish in North America.
freshwater
Needlefish
The common name for slender, surface-dwelling fish of the family Belonidae, recognized by long jaws lined with sharp teeth; the Needlefish (*Strongylura marina*) represents this widespread predatory group.
saltwater
Wolf Eel
The Wolf Eel is a large, spotted, eel-shaped fish of North Pacific rocky reefs that forms long-term pairs and cooperatively guards its eggs in a shared den.
saltwater
Gold Gourami
A selectively bred, solid golden-yellow color variety of the Three Spot Gourami, developed for the aquarium trade and sharing the same hardy, adaptable biology as its wild-type relative.
freshwater
Bicolor Damselfish
A small reef fish sharply split into a dark front half and a pale rear half, common on Caribbean and western Atlantic coral reefs where it defends algae-covered territories.
reef
Bicolor Anthias
A small Indo-Pacific reef fish sharply divided in color, with a violet-purple front half and a golden-yellow rear half, forming loose groups above reef structure.
reef
Telescopefish
A slender deep-sea fish named for its forward-directed, tubular telescoping eyes, which provide sharp binocular vision to detect faint prey silhouettes in near-total darkness.
deepsea
Silver Hake
The silver hake is a slim, bright-sided relative of true cod found along the northwestern Atlantic shelf, recognized by its sharp teeth, two dorsal fins, and lack of a chin barbel.
saltwater
Sea Lamprey
The sea lamprey is a primitive, jawless, eel-like fish famous for its parasitic sucker-disc mouth ringed with sharp teeth, which it uses to latch onto and feed on other fish.
saltwaterEuropean Hake
The European hake is a large, slender Gadiform predator of northeastern Atlantic and Mediterranean shelf waters, identifiable by its sharp-toothed jaws, two dorsal fins, and complete absence of a chin barbel.
saltwater
Royal Gramma
The Royal Gramma is a small Caribbean reef fish with a sharp two-tone body: violet-purple in front, golden yellow behind. It shelters upside down in caves and crevices along steep reef walls.
reef
Pacific Hake
The Pacific hake is a slender, migratory relative of true cod found throughout the northeastern Pacific, easily told apart by its two dorsal fins, sharp-toothed jaws, and complete lack of a chin barbel.
pelagic