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.
Barramundi Cod
The Australian common name for the panther grouper, a pale gray, black-spotted reef grouper instantly recognizable by its small head and steeply humped forehead.
reefWhite Weakfish
A slender, pale silvery-white weakfish common in estuaries and coastal lagoons along the South American Atlantic coast.
brackish
Yoyo Loach
A patterned South Asian loach whose silvery body is marked with dark lines that form Y- and X-shaped patterns, giving rise to its common name.
freshwater
Timor Halfbeak
A small, slender halfbeak of the genus Zenarchopterus with a needle-thin lower jaw, common in the brackish estuaries and coastal rivers of the Indo-Pacific near Timor and Southeast Asia.
brackish
Bluegill
A common North American sunfish recognized by its deep, rounded body and the dark blotch on its gill cover, widely found in lakes and ponds and popular with anglers.
freshwater
Blue Runner
A slender, greenish-blue jack common along the western Atlantic coast, often called the hardtail and known for its schooling habits and role as forage for larger predators.
pelagic
Black Rockfish
A dark, deep-bodied schooling rockfish common over rocky reefs and kelp forests along the Pacific coast, often seen in large surface-oriented aggregations.
saltwater
Sand Seatrout
A pale, slender weakfish common in Gulf of Mexico bays and estuaries, closely related to spotted seatrout but lacking body spots.
brackish
Horn Shark
A small, harmless bottom shark with heavy brow ridges and two sharp dorsal spines, common along the California coast.
cartilaginous
Japanese Halfbeak
A slim, silvery surface fish with a long lower jaw, common in coastal and brackish waters around Japan, Korea, and China.
brackish
Auriga Butterflyfish
A very common Indo-Pacific butterflyfish with cross-hatched white body, yellow rear, and often a trailing dorsal filament.
reef
Variable Platyfish
A close relative of the common platy, the variable platyfish is native to northeastern Mexico and shows exceptional natural variation in color and pattern, giving rise to many popular aquarium strains.
freshwater
Red Grouper
The red grouper is a heavy-bodied, reddish-brown reef fish common on rocky and coral bottoms of the Gulf of Mexico and western Atlantic, known for excavating shallow depressions in sediment.
reef
Orangespine Unicornfish
A hornless unicornfish marked by a black eye mask, yellow dorsal stripe, and vivid orange blade-like spines at the tail base; common on shallow Indo-Pacific reefs.
reef
Mummichog
A stout, hardy killifish common in salt marshes and estuaries along the North American Atlantic coast, well known for its extreme tolerance of changing salinity and oxygen levels.
brackish
Flyingfish
The common name for fish of the family Exocoetidae, known for gliding above the ocean surface on enlarged, wing-like fins; the Flyingfish (*Exocoetus volitans*) represents this widespread tropical group.
pelagic
Yellowfin Croaker
A silvery drum common in Pacific surf zones, recognized by faint diagonal lines along its flanks and yellow-tinted fins.
saltwaterWhite Croaker
The White Croaker is a pale, silvery-brassy sciaenid common in shallow Pacific coastal waters from British Columbia to Baja California.
saltwater
Tub Gurnard
The largest common European gurnard, with a reddish armored body and enormous, brilliantly blue-green pectoral fins that it spreads when disturbed.
saltwater
Tompot Blenny
A large, bold blenny with elaborate branched eye tentacles, common on rocky reefs and harbor walls around the British Isles and Mediterranean.
saltwater
Silver Perch
The Silver Perch is a small, bright silvery sciaenid common in seagrass and oyster reef habitats along the U.S. Atlantic and Gulf coasts.
brackish
Queenfish
A small, slender drum common in California bays and nearshore waters, notable for forming large, tightly packed schools near the surface.
saltwater
Leopard Shark
A slender, boldly patterned houndshark common in shallow California bays, easily recognized by its dark saddle-like blotches and spots.
cartilaginous
Little Skate
A small, common skate of the northwest Atlantic continental shelf, widely used in biological research and frequently caught as bycatch in coastal trawls.
cartilaginous