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.
Buenos Aires Tetra
A hardy, cold-tolerant characin from the Parana-La Plata basin, prized in aquariums for its active schooling behavior and subtropical resilience.
freshwater
Bicolor Angelfish
A vivid dwarf angelfish split sharply into a bright yellow front half and deep blue rear half, a favorite of reef aquarists.
reef
African Tiger Fish
A ferocious, fast-swimming predator of southern and eastern African rivers, armed with prominent interlocking teeth and known for spectacular aerial strikes on prey.
freshwater
Regal Angelfish
The Regal Angelfish is a striking orange-and-blue-striped reef fish with a large dark eye patch and a bold yellow tail, found on well-developed coral reefs across the Indo-Pacific.
reef
Pygmy Angelfish
A tiny deep-blue western-Atlantic dwarf angelfish with a bright yellow-orange face.
reef
Queen Angelfish
The Queen Angelfish is a large, vividly colored Caribbean reef fish with a blue-green body, yellow-rimmed scales, and a distinctive blue-ringed crown spot on its forehead.
reef
Koran Angelfish
A large Indo-Pacific angelfish whose adults show a blue-green body scattered with pearly blue spots and lines, while striking juveniles display concentric blue and white circular bands.
reef
Flame Angelfish
The Flame Angelfish is a small, vivid orange-red dwarf angelfish marked with black vertical bars and blue-tipped fins, commonly seen darting among reef crevices in the Pacific.
reef
Atlantic Bonito
A streamlined, fast-swimming relative of tuna and mackerel, marked by dark oblique stripes running across its steel-blue back.
pelagic
Auratus Cichlid
A small, strikingly striped mbuna from Lake Malawi, the auratus cichlid reverses its coloration between sexes as it matures, with golden juveniles giving way to dark, aggressive adult males.
freshwater
Squarespot Anthias
A schooling Indo-Pacific anthias; territorial males display a bold rectangular magenta-purple patch on an orange body, while females stay uniformly peach-colored.
reef
Siamese Algae Eater
A slim, torpedo-shaped Southeast Asian minnow relative well known among aquarium keepers for actively grazing on a wide range of algae types.
freshwater
Alligator Pipefish
The alligator pipefish is a robust, seagrass-dwelling pipefish with a thick, ridged body and a short, somewhat prehensile tail tip, giving it a stouter, more alligator-like profile than typical slender pipefish.
saltwater
Argentine Pearlfish
A deep-bodied annual killifish from the pampas of Argentina and Uruguay, marked with pearly white spots. It lives in seasonal ponds and survives dry months as diapausing eggs in the mud.
freshwater
Passer Angelfish
An eastern-Pacific angelfish with a dark blue body, a single white vertical bar, and a yellow tail.
reef
Lyretail Anthias
The lyretail anthias is a small, vividly orange-pink reef fish that forms large, colorful schools over coral drop-offs, with males sporting an elongated lyre-shaped tail.
reef
French Angelfish
A large Caribbean reef angelfish with a jet-black body edged in bright yellow on each scale, giving adults a shimmering, chain-mail-like appearance.
reef
Atlantic Croaker
The Atlantic Croaker is a silvery-bronze estuarine fish with a single chin barbel and faint wavy mottling, abundant along the western Atlantic coast.
brackish
Yellowtail Amberjack
A powerful, streamlined jack marked by a bold yellow lateral stripe and yellow tail, roaming temperate and subtropical waters worldwide around reefs, wrecks, and open water.
pelagic
West African Lungfish
An eel-shaped African lungfish able to survive months of drought by burrowing into mud and forming a protective cocoon while it aestivates.
freshwater
Stars and Stripes Puffer
A widespread Indo-Pacific puffer, also called the whitespotted puffer, marked with fine white spots on an olive-brown body and dark rings encircling the eyes and pectoral fin bases.
reef
Common Archerfish
A deep-bodied, silvery fish famed for spitting jets of water to knock insects off overhanging vegetation into the water.
brackish
Banded Archerfish
A silvery, deep-bodied fish famous for spitting jets of water to knock insects off overhanging vegetation into the water below. Bold dark bands and a flattened, upturned mouth make it easy to recognize.
brackish
Longfin African Conger
A slender, sand-dwelling conger with a distinctly long dorsal fin and a two-tone body, found burrowing along reef flats and lagoons across the Indo-Pacific and East African coast.
reef