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.
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
Valentini Puffer
The Valentini Puffer is a small reef puffer marked by two bold black saddle patches on a white-and-tan body, a pattern also mimicked by an unrelated filefish.
reef
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.
brackishCorvina
A large silvery weakfish native to the Gulf of California, best known by its bright orange mouth lining and countershaded body.
saltwaterFlowerhorn
A vividly colored, artificially bred cichlid hybrid famous for its bulbous head hump and bold markings, with no wild ancestral population.
freshwater
Sterba's Corydoras
A popular armored catfish with a spotted body and bright orange pectoral fins, native to river tributaries along the Brazil-Bolivia border.
freshwater
Spined Loach
The Spined Loach is a small, striped bottom-dweller named for the tiny erectile spine beneath each eye, found in slow-moving European and Asian waters.
freshwater
Snowflake Moray
The Snowflake Moray is a mottled black-and-yellow reef eel with blunt, crushing teeth adapted for feeding on crabs and shrimp rather than fish.
reef
Rummynose Tetra
A slender silvery tetra known for its bright red-orange snout and a bold black-and-white striped tail, prized for tight, synchronized shoaling.
freshwater
Scooter Dragonet
A small, mottled reef-associated dragonet that rests on sand near coral reefs and moves in short scooting hops rather than continuous swimming.
reef
Saddleback Clownfish
A dark, saddle-marked clownfish that shelters among the tentacles of large sea anemones on sandy reef slopes and lagoons across the Indo-Pacific.
reef
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
Scissortail Rasbora
A slender silver rasbora named for its striking black-and-white tail markings that open and close in a scissor-like motion while swimming.
freshwater
Ram Cichlid
A small, dazzlingly colorful South American dwarf cichlid prized for its violet-blue iridescence and peaceful, pair-bonding nature.
freshwater
Red Phantom Tetra
A blackwater Orinoco characin with a rosy translucent body and bold black shoulder mark, known for its tall, flag-like dorsal fin in males.
freshwater
Rock Goby
A small, mottled goby common in rocky tide pools along European and North African coasts, easily spotted darting between rocks at low tide.
saltwater
Red Devil Cichlid
A bold, thick-lipped Nicaraguan cichlid known for its fiery orange-red or white coloration and famously feisty, combative temperament.
freshwater
Pacific Halibut
The Pacific halibut is a massive right-eyed flatfish of the cold North Pacific, closely related to the Atlantic halibut and among the largest bony fish in its range.
saltwater
Pacific Blue-eye
A tiny, schooling fish common in coastal streams and estuaries of eastern Australia, easily recognized by its reflective, luminous blue eyes.
brackish
Penguin Tetra
An Amazonian characin recognized by its bold black tail stripe and unusual head-up swimming posture resembling a penguin's stance.
freshwater
Peacock Cichlid
A brilliantly colored Lake Malawi cichlid whose males flash iridescent blues, oranges, and yellows to attract mates and rivals alike.
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.
saltwater
Otocinclus
A tiny suckermouth catfish that spends most of its time grazing algae and biofilm from surfaces in slow-moving South American waters.
freshwater
Numbfish
A small electric ray capable of generating an electric shock to stun prey and deter predators, found buried in sandy shallows along warm coastlines.
cartilaginous