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.
Three-Spot Domino Damselfish
A round, jet-black damselfish marked with three white spots, commonly seen sheltering among sea anemones and branching corals on Indo-Pacific reefs.
reef
Springer's Damselfish
A small, dramatic black damselfish with two vivid electric-blue stripes running along the top of its body, found on shallow reefs of the Philippines and Indonesia.
reef
Scopas Tang
A deep-bodied, disc-shaped surgeonfish usually seen in muted brown to gray tones, valued on reefs and in aquariums alike as an efficient, hardy algae grazer.
reef
Cunner
A small, cold-hardy wrasse with highly variable coloring, found on rocky reefs and kelp beds along the western Atlantic and known for becoming dormant in winter.
saltwater
White Sturgeon
The white sturgeon is the largest freshwater fish in North America, an armored, long-snouted giant found in Pacific coast rivers from California to British Columbia.
freshwater
Wolf Herring
A slender, silvery predator with a fanged, upturned jaw, the wolf herring hunts small fish in Indo-Pacific coastal waters despite belonging to the herring order.
saltwater
Sterlet
The sterlet is the smallest widespread sturgeon species, a slender freshwater fish of Ponto-Caspian rivers known for its long, thin, upturned snout with fringed barbels.
freshwaterTiger Muskie
A hybrid of northern pike and muskellunge, this elongated apex predator sports bold dark tiger stripes and is prized as one of freshwater's most aggressive game fish.
freshwater
Shortnose Sturgeon
The shortnose sturgeon is a small, endangered anadromous fish of eastern North America, distinguished from its larger Atlantic sturgeon relative by a shorter, blunter snout.
brackish
Roosterfish
An unmistakable eastern Pacific game fish named for the tall comb-like spines of its dorsal fin, which it raises above the water while hunting.
saltwater
Pacific Mackerel
A schooling pelagic fish of the eastern Pacific with an iridescent blue-green back marked by irregular dark bars and scattered spots along its lower flanks.
pelagic
Lumpfish
Also called the lumpsucker, the Lumpfish is a rounded, scaleless North Atlantic fish that anchors to rocks with a sucker disc, and whose males guard the eggs after spawning.
saltwaterHerring
One of the world's most abundant fish, the herring forms colossal schools in cold North Atlantic waters and underpins much of the region's marine food web.
pelagic
European Eel
The European Eel is a catadromous fish found across European rivers and lakes, now critically endangered after a population collapse exceeding 90% since the 1980s.
freshwater
Black Neon Tetra
A small Brazilian tetra marked by a bold black horizontal stripe paired with a shimmering silvery-white line above it, a popular schooling fish in freshwater aquariums.
freshwater
Boeseman's Rainbowfish
Boeseman's Rainbowfish is a vividly two-toned freshwater fish from New Guinea, with a blue-violet front half and a fiery orange-yellow rear half.
freshwater
Bluefin Tuna
One of the largest and fastest bony fish in the ocean, the Bluefin Tuna is a warm-blooded, torpedo-shaped predator capable of long transoceanic migrations across the Atlantic.
pelagic
Banggai Cardinalfish
The Banggai Cardinalfish is a striking silver-and-black fish with long trailing fins and bold white spots, native to a tiny area of Indonesia and listed as Endangered in the wild.
reef
Atlantic Saury
A slender, silvery, beaked fish of the open North Atlantic, closely related to needlefish, recognized by its elongated jaws and a row of small finlets near the tail.
pelagic
Thick-lipped Gourami
A small, hardy Myanmar labyrinth fish closely related to the Dwarf Gourami, distinguished by its noticeably thickened lips and reddish-blue diagonal banding in breeding males.
freshwaterCombtooth Blenny
A general term for the large blenny family Blenniidae, small scaleless fish named for the comb-like row of fine teeth many species use to graze algae.
saltwater
Tarpon
A giant, silver-scaled fish known as the 'Silver King,' famous for its acrobatic leaps and its ability to gulp air at the surface in low-oxygen coastal waters.
brackish
Rohu
A large South Asian river carp with a streamlined, silvery-grey body, widely farmed across the Indian subcontinent as a major aquaculture species and prized angling fish.
freshwater
Ornate Bichir
A striking Central African freshwater fish with an eel-like body covered in an intricate leopard-spot network pattern and a row of spiny finlets along its back.
freshwater