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.
Allen's Damselfish
A slender, iridescent blue damselfish with a bright yellow tail, native to reefs of the Coral Triangle and known for its striking two-tone coloration.
reef
Springer's Damselfish
A small, dramatic black damselfish with two vivid electric-blue stripes running along the top of its body, found on shallow reefs of the Philippines and Indonesia.
reef
Cinnamon Clownfish
A deep reddish-orange clownfish with dark shading across the body and a single white head bar, living among sea anemones on coral reefs of the western Pacific.
reef
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
Green Terror
A robust, iridescent-green South American cichlid whose bold turquoise spangling and feisty temperament earned it its combative common name.
freshwater
Majestic Angelfish
A boldly patterned western-Pacific angelfish with orange body, blue-edged bands, and a blue lower body.
reef
Pearlscale Butterflyfish
A western-Pacific butterflyfish with a cross-hatched pearly body and a bright orange rear and tail.
reef
Passer Angelfish
An eastern-Pacific angelfish with a dark blue body, a single white vertical bar, and a yellow tail.
reef
Potter's Angelfish
A small Hawaiian endemic dwarf angelfish, rusty orange with blue-grey and fine wavy blue lines.
reef
Semicircle Angelfish
A large Indo-Pacific angelfish; adults are greenish-brown with blue-speckled fins and blue face lines.
reef
Racoon Butterflyfish
An Indo-Pacific butterflyfish with a black 'mask' over the eyes bordered by white and a broad yellow body.
reef
Lemonpeel Angelfish
A small, bright yellow Pacific dwarf angelfish with a blue ring around the eye and blue edging on the fins.
reef
Klein's Butterflyfish
A golden-brown Indo-Pacific butterflyfish with a dark eye bar and dusky patches, common on many reefs.
reef
Foureye Butterflyfish
A Caribbean butterflyfish with a large false eyespot near the tail and a real eye hidden by a dark bar.
reef
Bicolor Blenny
A small reef blenny sharply split into a dark front half and bright orange rear half, sheltering in rubble crevices.
reef
Princess Parrotfish
A Caribbean parrotfish whose blue-green terminal males show bright orange and blue face stripes over a green body.
reef
Horn Shark
A small, harmless bottom shark with heavy brow ridges and two sharp dorsal spines, common along the California coast.
cartilaginous
Japanese Halfbeak
A slim, silvery surface fish with a long lower jaw, common in coastal and brackish waters around Japan, Korea, and China.
brackish
Corkwing Wrasse
A small, colorful European wrasse identified by a dark comma-shaped spot behind the eye and a dark blotch on the tail base.
saltwater
Bumblebee Fish
A tiny, boldly banded goby popular in brackish aquariums, named for its wasp-like black-and-yellow stripes.
brackish
Yellow Longnose Butterflyfish
A bright yellow Indo-Pacific butterflyfish with a very long tweezer-like snout and a black eyespot near the tail.
reefWhite Weakfish
A slender, pale silvery-white weakfish common in estuaries and coastal lagoons along the South American Atlantic coast.
brackishBlood Parrot Cichlid
A rounded, vivid orange-red hybrid cichlid recognized by its permanently small, beak-like mouth and stubby, rounded fins.
freshwater
Ornate Butterflyfish
A showy Indo-Pacific butterflyfish with diagonal orange stripes across a white body and black-and-yellow face bands.
reef