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.
Greenland Halibut
A cold-water, deep-sea North Atlantic and Arctic flatfish with a dark body on both sides, a large toothy mouth, and a less flattened posture than typical flounders.
deepsea
Moray Eel
A long, serpentine reef predator that hides in crevices by day, identified by its scaleless body, continuous fin along the back, and powerful jaws with a rarely seen second set of pharyngeal jaws.
reef
Severum
A deep-bodied, disc-shaped Amazonian cichlid with subtle vertical banding and warm olive-gold coloration, popular for its calm temperament.
freshwater
Bronze Corydoras
A hardy, metallic-sheened armored catfish that forages along the substrate and is one of the most widely kept bottom-dwelling aquarium fish.
freshwater
Bumphead Parrotfish
The largest parrotfish species in the world, recognized by the massive bony hump on its forehead, used to headbutt corals while feeding in large, roving schools.
reefAtlantic Silverside
A slender, schooling coastal fish common along the western Atlantic shoreline, marked by a bright silver stripe running down each flank.
brackish
Largetooth Sawfish
One of the largest sawfish species, uniquely able to travel far up freshwater rivers, now Critically Endangered and eliminated from most of its former circumtropical range.
cartilaginous
Glass Knifefish
A slender, near-transparent South American fish that swims using a continuous rippling fin and emits a weak electric field to sense its surroundings.
freshwater
Warmouth
A stocky, big-mouthed sunfish with red eyes and dark cheek streaks, at home in weedy, sluggish waters and swamps of the eastern United States.
freshwater
Princess Parrotfish
A Caribbean parrotfish whose blue-green terminal males show bright orange and blue face stripes over a green body.
reef
Midnight Parrotfish
A large, dark blue-black Caribbean parrotfish speckled with bright blue-green patches around the head.
reef
Moon Wrasse
A fast-swimming green Indo-Pacific wrasse with pink-magenta facial streaks and a bright yellow crescent-moon tail.
reef
Niger Triggerfish
A deep blue-green triggerfish with reddish teeth and a trailing crescent tail, often seen feeding on plankton above reef slopes.
reef
White Cloud Mountain Minnow
A hardy, cold-tolerant minnow with a metallic green-gold stripe and red-tinted fins, native to cool mountain streams in southern China.
freshwater
Wahoo
One of the fastest fish in the ocean, the Wahoo is a slender, torpedo-shaped predator with iridescent blue-green tiger stripes, found in warm seas worldwide.
pelagic
Rainbow Parrotfish
The largest parrotfish in the Caribbean, displaying a striking blend of blue-green and orange coloration and playing a key role in reef sand production and algae control.
reef
Mandarinfish
A tiny, vividly patterned reef fish covered in a maze-like network of blue, orange, and green, prized as one of the most colorful fish in the ocean.
reef
Jack Dempsey
A robust Central American cichlid named after a boxing champion for its feisty temperament, known for iridescent blue-green speckling that develops as it matures.
freshwater
Bar Jack
A sleek, blue-green jack with a dark stripe along its back and a black-and-white striped tail, common on Caribbean and western Atlantic reefs.
reef
Redband Parrotfish
A small, variable Caribbean parrotfish; terminal males are green with a red band and a distinctive yellow-and-black shoulder spot.
reef
Cory Catfish
A small, armored South American bottom-dweller with a bronze-green sheen, known for shoaling and constant substrate foraging.
freshwater
Crimson-spotted Rainbowfish
A small, deep-bodied rainbowfish native to coastal rivers of eastern Australia, recognized by its iridescent blue-green flanks marked with rows of crimson-red spots.
freshwater
Atlantic Mackerel
A fast-swimming schooling fish with iridescent blue-green wavy stripes across its back, found in cold and temperate waters on both sides of the North Atlantic.
pelagic
Dragon Wrasse
A reef wrasse whose juveniles mimic drifting algae with wild fin extensions, while adults become stout, green-bodied rock-flippers that hunt buried invertebrates.
reef