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.
Madagascar Rainbowfish
An elongated, silvery rainbowfish from Madagascar's eastern rainforest rivers, recognized by its bold black-edged yellow and red fin markings.
freshwater
Denison Barb
A striking torpedo-shaped barb endemic to fast hill streams of India's Western Ghats, known for its bold red-black-yellow stripe and endangered status.
freshwater
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
Purple Tang
A vivid violet surgeonfish with a contrasting yellow tail, native to Red Sea coral reefs.
reef
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
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
Koi
Ornamental color varieties of the Amur carp, selectively bred in Japan for centuries into hundreds of red, white, black, and gold patterns kept in decorative ponds worldwide.
freshwater
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
Ember Tetra
A tiny, glowing orange-red tetra that shoals in large numbers and is among the smallest characins kept in freshwater aquaria.
freshwater
Sohal Tang
A powerfully built surgeonfish endemic to the Red Sea and nearby Arabian waters, marked by bold blue and black striping and known for fiercely defending shallow reef flats.
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
Yellowtail Wrasse
A striking Indo-Pacific wrasse whose bright red spotted juveniles transform into green-blue adults with a yellow tail.
reef
Tomato Clownfish
A deep-bodied, orange-red anemonefish with a single white head bar, living in close partnership with a host sea anemone.
reef
Flame Hawkfish
A brilliant red-orange reef fish that perches motionless atop branching coral, darting out to ambush small prey.
reef