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.
Guineafowl Pufferfish
The Guineafowl Pufferfish is a variably colored reef puffer, most often dark brown to black with small white spots, resembling the plumage of a guineafowl bird.
reef
Bluefin Killifish
A small, slender killifish native to Florida and the southeastern US, named for the iridescent blue fringe on the male's dorsal and anal fins.
freshwater
Asian Arowana
A large, brightly colored freshwater fish prized for its metallic scales and dragon-like appearance, native to Southeast Asian rivers and now considered endangered in the wild.
freshwater
Striped Panchax
A larger South Asian killifish, also called the golden wonder killifish, marked by bold dark horizontal stripes on a golden-olive body. It hunts insects near the surface of ponds and rice paddies.
freshwater
Bumblebee Fish
A tiny, boldly banded goby popular in brackish aquariums, named for its wasp-like black-and-yellow stripes.
brackish
Pristella Tetra
A translucent, pale-golden tetra whose semi-transparent body reveals internal structures, marked by distinctive black-and-yellow fin patches.
freshwater
Angelfish
A tall, laterally flattened cichlid from the Amazon basin, prized in the aquarium hobby for its striking triangular fin profile and extensive range of bred color varieties.
freshwater
Balloon Molly
A selectively bred molly variety with a distinctive rounded, ball-shaped body caused by a spinal curvature, developed and maintained through aquarium breeding.
freshwater
Goldfish
A hardy freshwater fish domesticated from the wild Prussian carp, prized worldwide as an ornamental pond and aquarium species in many color forms.
freshwater
Southern Platyfish
The full common name for the widely kept platy, the southern platyfish is a small, hardy livebearer native to Mexico, Belize, and Guatemala, prized for its color variety and easy breeding.
freshwater
Opaline Gourami
A marbled blue-and-silver color variety of the Three Spot Gourami, bred for its swirling opalescent pattern while retaining the same hardy biology and behavior as the wild form.
freshwater
Kole Tang
A compact, striped surgeonfish with a golden eye-ring, using bristle-like teeth to sweep detritus from reef rock.
reef
Meagre
The Meagre is a large, golden-silver sciaenid of the eastern Atlantic and Mediterranean, among the biggest members of the drum family.
saltwater
Klein's Butterflyfish
A golden-brown Indo-Pacific butterflyfish with a dark eye bar and dusky patches, common on many reefs.
reefLeopard Danio
A spotted color morph of the Zebrafish, the Leopard Danio trades horizontal stripes for a striking pattern of dark spots across a golden body.
freshwater
Sarpa Salpa
The sarpa salpa, or salema porgy, is a silvery sparid with golden stripes that grazes on algae over Mediterranean and eastern Atlantic reefs and seagrass beds.
reef
Senorita
A slender, golden-brown kelp forest wrasse of the California coast known for its cleaning behavior, picking parasites off larger fish such as sheephead.
saltwater
Reef Croaker
A coppery-golden drum associated with Caribbean coral reefs, unusual among croakers for its strong reef affinity rather than open sand or mud habitat.
reef
Gilthead Bream
A deep-bodied Mediterranean and Eastern Atlantic sparid named for the golden band across its forehead. A euryhaline species that moves between coastal reefs and brackish lagoons.
saltwater
Eastern Rainbowfish
A widespread eastern Australian subspecies of the splendid rainbowfish complex, showing blue-green to golden flanks and yellow-orange fins along coastal Queensland rivers.
freshwater
Walleye
A slender, golden-olive freshwater predator named for its large, glassy, light-reflective eyes that give it excellent low-light vision for hunting at dusk and in murky water.
freshwater
Peacock Bass
A powerful, brilliantly colored cichlid from South America, prized for its golden-green flanks, dark vertical bars, and the distinctive eyespot at the base of its tail.
freshwater
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
Apache Trout
The Apache trout is a golden-yellow native trout found only in the high-elevation streams of Arizona's White Mountains, and it is the state fish of Arizona following decades of conservation recovery efforts.
freshwater