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.
Spangled Emperor
The spangled emperor is a large, pale grey-green emperor fish of the Indo-Pacific, marked by fine blue spangles on its scales and a strong, crushing jaw for cracking shellfish.
reef
Emperor Angelfish
The Emperor Angelfish is a large, boldly striped reef fish with alternating blue and yellow horizontal lines and a dark mask across the eyes, one of the most recognizable angelfish in the Indo-Pacific.
reef
Emperor Killifish
Emperor Killifish is an alternate name for the Blue Gularis, one of the largest and most dramatically finned West African killifish, with males sporting an elongated lyre-shaped tail.
freshwater
Emperor Tetra
A refined, violet-blue tetra from Colombia known for a bold black lateral stripe and males' elongated, sword-like central tail rays.
freshwater
Emperor Cichlid
The largest cichlid species in the world, the emperor cichlid grows to nearly a meter long in the deep waters of Lake Tanganyika and is notable for spawning only once before dying shortly after.
freshwater
Sparkling Gourami
A tiny, jewel-like Southeast Asian gourami covered in iridescent blue-green spangling and reddish stripes, small enough to be one of the smallest gouramis kept in aquariums.
freshwater
Peacock Gudgeon
A vividly colored, peaceful gudgeon from Papua New Guinea, prized in aquariums for its blue-spangled body, orange fins, and calm temperament rare among small predatory fish.
freshwater
Green Terror
A robust, iridescent-green South American cichlid whose bold turquoise spangling and feisty temperament earned it its combative common name.
freshwater
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
Diamond Tetra
A deep-bodied Venezuelan characin famed for its sparkling iridescent scales, endemic to the ecologically stressed Lake Valencia basin.
freshwater
Thorny Seahorse
A spiky Indo-Pacific seahorse covered in long, sharp bony projections, giving it a thorny, almost alien silhouette that helps it disappear among sponges and gorgonian coral.
reefSpotted Moray
A pale, leopard-patterned eel of Caribbean and western Atlantic reefs, its cream body densely covered in dark brown blotches that give it a mottled, sponge-like appearance.
reef
Star Puffer
One of the largest pufferfish species, the star puffer is covered edge-to-edge in small black spots and roams Indo-Pacific reefs and lagoons feeding on sponges, tunicates, and hard-shelled prey.
reef