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.
Freshwater Angelfish
An iconic Amazonian aquarium fish with a tall, disc-shaped, laterally compressed body, long trailing fins, and bold vertical stripes that help it blend among submerged roots and plants.
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
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
African Lungfish
An eel-like freshwater fish capable of breathing air and surviving months buried in dried mud during droughts, one of the most drought-resistant vertebrates known.
freshwater
Botia
A genus of South and Southeast Asian freshwater loaches known for social behavior and varied patterning; the queen loach (Botia dario) is a representative species.
freshwater
Parkinson's Rainbowfish
A large, robust rainbowfish from the eastern rivers of Papua New Guinea, with mature males displaying a striking golden-orange rear half contrasting with a bluish-silver front.
freshwater
Betta
A small, vividly colored Southeast Asian freshwater fish famed for its flowing fins and the intense territorial aggression of males toward rivals.
freshwater
Dwarf Gourami
A small, colorful labyrinth fish from South Asia, with males displaying vivid diagonal red and blue stripes, popular in the freshwater aquarium trade.
freshwater
Rainbow Goby
A tiny, iridescent freshwater goby whose males display shimmering blue-green and orange coloration, found clinging to rocks in fast mountain streams across the Indo-Pacific.
freshwater
Masu Salmon
Masu salmon is the southernmost and westernmost Pacific salmon species, native to Japan, Korea, and the Russian Far East, notable for males that can mature and spawn entirely within freshwater.
freshwater
Cherry Barb
A small, slender freshwater fish whose males flush a deep cherry-red color, especially during breeding, while both sexes show a dark horizontal stripe running along the body.
freshwater