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.
Von Rio Tetra
A small, fiery-red tetra native to coastal rivers near Rio de Janeiro, notable for two dark shoulder spots and deep red hindquarters.
freshwater
Longnose Chimaera
A deep-water cartilaginous fish related to sharks, marked by an unmistakably long pointed snout and a slender tapering body cruising continental slopes far below sunlight.
cartilaginous
Sturgeon
An ancient family of large, armored bony fish with bony scutes instead of scales and a shark-like barbeled snout. Sturgeon migrate between rivers and the sea to spawn and are among the most endangered fish groups.
brackish
Giant Grouper
The largest bony fish found on coral reefs, the giant grouper is a massive Indo-Pacific predator with a huge head and mouth, capable of ambushing prey as large as small sharks and turtles.
reef
Rainbow Runner
A slender, torpedo-bodied jack with two vivid blue-green stripes, found roaming warm oceans worldwide, often trailing larger pelagic fish like tuna and sharks.
pelagic
Pajama Cardinalfish
A small, egg-shaped reef fish with a yellow-striped head and red-spotted rear body, resembling patterned sleepwear.
reef
Firemouth Cichlid
A Central American cichlid famous for the fiery red-orange throat it flares open to intimidate rivals during territorial disputes.
freshwater
Queen Triggerfish
The Queen Triggerfish is a strikingly colorful Atlantic reef fish, marked by blue facial lines, a yellow-tinged tail, and elongated dorsal and tail fin filaments.
reef
Magnificent Rabbitfish
A striking white rabbitfish patterned with bold black head markings and a black-edged dorsal fin, giving it a panda-like appearance among the more brightly colored reef rabbitfishes.
reef
White Grunt
A stout, silvery reef fish with a bright orange-red mouth lining, known for the grinding sound it makes with its pharyngeal teeth.
reef
White Cloud Mountain Minnow
A hardy, cold-tolerant minnow with a metallic green-gold stripe and red-tinted fins, native to cool mountain streams in southern China.
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
Glowlight Tetra
A slender, translucent tetra marked by a bright iridescent orange-red stripe running the length of its body, giving it a luminous glow effect.
freshwater
Common Roach
A widespread European freshwater fish with a silvery body and distinctive red-orange fins, forming large shoals in slow rivers, lakes, and canals.
freshwater
American Flagfish
A stocky, deep-bodied killifish native to Florida, named for the red-and-blue striped, star-marked flank pattern of breeding males reminiscent of a flag.
freshwater
Warsaw Grouper
A massive, deep-dwelling western Atlantic grouper with a dark brownish-red body, oversized head, and a second dorsal spine noticeably longer than the others.
deepsea
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
Pearlscale Butterflyfish
A western-Pacific butterflyfish with a cross-hatched pearly body and a bright orange rear and tail.
reef
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
Paradise Fish
A hardy East Asian labyrinth fish with vivid blue-and-red banded flanks and flowing fins, historically one of the first ornamental fish kept in Western aquariums.
freshwater
Fairy Wrasse
A dazzling small reef wrasse in which males flash iridescent shades of red, purple, and blue during courtship displays over coral rubble and reef slopes.
reef
Crimson-spotted Rainbowfish
A small, deep-bodied rainbowfish native to coastal rivers of eastern Australia, recognized by its iridescent blue-green flanks marked with rows of crimson-red spots.
freshwater
Ember Tetra
A tiny, glowing orange-red tetra that shoals in large numbers and is among the smallest characins kept in freshwater aquaria.
freshwater
Passer Angelfish
An eastern-Pacific angelfish with a dark blue body, a single white vertical bar, and a yellow tail.
reef