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.
Bolivian Ram
A hardier, calmer cousin of the German Blue Ram, this South American dwarf cichlid sports a soft gray-gold body with a ruby-edged dorsal fin.
freshwater
Banjo Catfish
A flattened, camouflaged South American catfish with a body shape resembling a banjo, spending most of its time buried in sand or hidden among leaf litter.
freshwater
Blackspotted Puffer
The Blackspotted Puffer, also called the dog-faced puffer, is a small reef pufferfish with a gray, yellow, or blue body scattered with a few large dark spots.
reef
Upside-down Catfish
A small Central African catfish famous for habitually swimming belly-up, an unusual behavior reflected in its reversed body coloration.
freshwater
Tiger Shovelnose Catfish
A large South American river catfish with a distinctive flattened, shovel-shaped snout and bold black stripes across a pale body.
freshwater
Serpae Tetra
A vividly red-bodied tetra with a bold black shoulder patch, known for its assertive, nippy temperament within shoaling groups.
freshwater
Princess Parrotfish
A Caribbean parrotfish whose blue-green terminal males show bright orange and blue face stripes over a green body.
reef
Rainbow Wrasse
A slender Mediterranean and eastern-Atlantic wrasse; terminal males have a vivid orange zigzag stripe along a blue-green body.
saltwaterLeopard Danio
A spotted color morph of the Zebrafish, the Leopard Danio trades horizontal stripes for a striking pattern of dark spots across a golden body.
freshwater
Horse-eye Jack
A deep-bodied, silvery jack with an oversized eye, commonly seen in large stationary schools around Caribbean and Florida reefs and harbors.
reef
Giant Mudskipper
The largest common mudskipper species, a heavy-bodied, predatory amphibious goby that patrols mangrove mudflats across South and Southeast Asia.
brackish
Electric Ray
A round-bodied ray capable of generating a powerful electric shock from specialized organs, used to stun prey and deter predators.
cartilaginous
Bleeding Heart Tetra
A deep-bodied upper Amazon characin marked by a small red 'bleeding heart' spot and, in males, a dramatic elongated dorsal fin.
freshwater
Atlantic Halibut
The Atlantic halibut is the largest flatfish species, a right-eyed flounder with a diamond-shaped body found on cold seabeds of the North Atlantic.
saltwater
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
Walleye Pollock
Walleye pollock is an abundant, schooling cod relative of the North Pacific, identified by its slender silvery body, speckled back, protruding lower jaw, and forked tail.
pelagic
Threadfin Butterflyfish
A widespread Indo-Pacific butterflyfish identified by a pale yellow body, dark diagonal stripes, a black eye-band, and a distinctive trailing filament on the rear dorsal fin.
reefYellowfin Rainbowfish
A slender rainbowfish endemic to Misool Island in Indonesia's West Papua region, named for its bright yellow unpaired fins that contrast with its silvery-olive body.
freshwater
Squarespot Anthias
A schooling Indo-Pacific anthias; territorial males display a bold rectangular magenta-purple patch on an orange body, while females stay uniformly peach-colored.
reef
Reticulated Pufferfish
A puffer of Indo-Pacific mangroves and estuaries, patterned with fine dark reticulated lines over a pale body and often marked with a network of interconnected markings resembling a map.
brackish
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
Flathead Catfish
A massive, flat-headed catfish with a mottled yellow-brown body and a protruding lower jaw, known for its solitary, ambush-predator lifestyle in large river systems.
freshwater
Gilthead Bream
A deep-bodied Mediterranean and Eastern Atlantic sparid named for the golden band across its forehead. A euryhaline species that moves between coastal reefs and brackish lagoons.
saltwater
Coral Beauty Angelfish
The Coral Beauty Angelfish is a small dwarf angelfish with a deep purple-blue body and orange-yellow scale highlights, widely distributed across Indo-Pacific reefs.
reef