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.
Northern Anchovy
A small, slender schooling fish with a pointed snout and large mouth, abundant along the Pacific coast of North America, where it forms a key part of the California Current forage base.
pelagicNorthern Kingfish
A slender surf-dwelling drum of the Atlantic coast, marked by bold dark diagonal bars and a distinctive elongated dorsal fin ray.
saltwater
Northern Studfish
A large, robust topminnow of clear, rocky streams in the Ozark and Appalachian interior highlands, with males showing rows of iridescent blue-green spots.
freshwater
Northern Wolffish
The largest wolffish species, the Northern Wolffish is a plain grey-brown, deep-water predator of the North Atlantic and Arctic with powerful crushing jaws.
deepsea
Northern Pike
A long, torpedo-shaped ambush predator with a duck-bill-like snout and light bean-shaped markings, famous for lurking motionless in weeds before striking prey with explosive speed.
freshwater
Northern Pipefish
A slender, bony-ringed relative of the seahorse that drifts vertically among eelgrass along the western Atlantic coast, camouflaged by its stick-like shape.
saltwater
Northern Brook Lamprey
The northern brook lamprey is a small, non-parasitic freshwater lamprey of the Great Lakes and St. Lawrence River region, believed to have evolved from a parasitic ancestor but never feeding as an adult.
freshwater
Northern Sea Robin
A bottom-dwelling western Atlantic fish with an armored head and huge wing-like pectoral fins, using leg-like fin rays to walk across the seafloor.
saltwaterPacific Bluefin Tuna
A massive, warm-bodied tuna capable of ocean-basin migrations across the entire North Pacific, recognized by its deep, torpedo-shaped body and short pectoral fins.
pelagic
Pacific Anchovy
A small, slender schooling fish abundant along the eastern Pacific coast from Canada to Baja California, the Pacific Anchovy is a key forage species known for its long snout and prominent silvery lateral stripe.
pelagic
Lined Seahorse
A medium-sized seahorse of the western Atlantic coast, variably colored from black to bright orange, often marked with fine pale lines on the neck and named for these subtle streaks.
saltwater
Red Snapper
A rosy-red snapper of the Gulf of Mexico and southeastern U.S. coast, recognized by its sloped profile, sharp triangular teeth, and bright red eyes.
reef
Jardini Arowana
A large, metallic-scaled arowana from northern Australia and New Guinea, known for its bronze-green body and upward-facing mouth built for surface feeding.
freshwater
Longtail Tuna
A coastal tuna of the Indo-West Pacific with a notably slender, elongated body and a long, low second dorsal fin, often found closer to shore than other tunas.
pelagic
Atlantic Bluefin Tuna
A massive, torpedo-shaped, deep blue-backed tuna built for speed and long-distance migration across the Atlantic Ocean and Mediterranean Sea.
pelagicKingfish
Kingfish, led by the Northern Kingfish, are silvery-grey surf-zone drums with a chin barbel and diagonal body bars, common along Atlantic beaches.
saltwater
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.
pelagicZebra Seahorse
A small, boldly striped seahorse endemic to northern Australian waters, patterned with fine dark bands that give it a distinctly zebra-like appearance.
reef
Silver Scat
A disc-shaped, silvery fish marked with dark vertical bars, found schooling in brackish estuaries and mangroves across the Indo-Pacific and northern Australia.
brackish
Ballan Wrasse
The largest wrasse in northern European waters, a stout rocky-reef fish with highly variable green, brown, or reddish mottling.
saltwater
Sebae Clownfish
A dark brown clownfish with a bold yellow tail and two white body bars, native to reefs of the northern Indian Ocean and closely tied to the sebae sea anemone.
reef
Sand Goby
A small, sand-colored goby common on shallow sandy seabeds and estuaries around northern Europe, distinguished by a dark spot at the base of its first dorsal fin.
brackish
Colombian Tetra
A large, vividly rose-red characin native to northern Colombian rivers, notable for its bold coloration and confident schooling behavior.
freshwater
Arctic Grayling
The Arctic grayling is a cold-water salmonid recognized by its tall, colorfully spotted dorsal fin, inhabiting clean rivers and lakes across northern North America and Siberia.
freshwater