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.
Yellow Tang
A brilliant all-yellow surgeonfish common on Pacific coral reefs, especially around Hawaii, easily recognized by its disc-shaped body and sharp tail spine.
reef
Yellowtail Snapper
A slender Caribbean reef fish with a bold golden stripe running from snout to its deeply forked yellow tail. Often seen swimming in open water above reefs rather than hugging the bottom.
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Whitetail Surgeonfish
A slender, dark-bodied tang with a strikingly pale, forked tail, often seen hovering in groups over Indo-Pacific reef drop-offs to feed on drifting zooplankton.
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Longnose Hawkfish
A red-and-white lattice-patterned hawkfish with an unmistakable elongated snout, perched motionlessly on gorgonian sea fans across the Indo-Pacific.
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Yellowtail Wrasse
A striking Indo-Pacific wrasse whose bright red spotted juveniles transform into green-blue adults with a yellow tail.
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Yellowtail Blue Damselfish
A small, vividly electric-blue damselfish with a sharply contrasting bright yellow tail, common on shallow reef flats and lagoons of the western Pacific.
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Whitespotted Puffer
A common Indo-Pacific reef puffer with a dark olive-brown body scattered with small white spots and distinctive dark rings around its eyes, gills, and pectoral fin bases.
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Wideband Clownfish
A dark brown-to-black anemonefish with a single thick white band across the mid-body, restricted to temperate-edge reefs around Lord Howe Island, eastern Australia, and New Caledonia.
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Yellowfin Grouper
The yellowfin grouper is a reddish-brown to olive reef grouper of the Caribbean and western Atlantic, easily recognized by the bright yellow patch on its pectoral fins.
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Yellow Longnose Butterflyfish
A bright yellow Indo-Pacific butterflyfish with a very long tweezer-like snout and a black eyespot near the tail.
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Yellowtail Damselfish
A dark, deep-bodied Caribbean damselfish with a bright yellow tail, known for aggressively farming algae gardens.
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Yellowfin Surgeonfish
One of the largest surgeonfishes, reaching 70 cm, identified by a bright yellow pectoral-fin patch and blue-ringed eyes; found in lagoons and bays across the Indo-Pacific and eastern Pacific.
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Whitecheek Tang
A dark brown to black surgeonfish set apart by a bright white patch beneath the eye and a narrow orange tail band, commonly seen grazing rubble zones on Indo-Pacific reefs.
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Yellow Stingray
A small, boldly patterned stingray of the western Atlantic and Caribbean, often seen resting on sand near coral reefs and seagrass beds in shallow, clear water.
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Zebra Turkeyfish
A dwarf lionfish species boldly striped in reddish-brown and white, with broad, fan-like pectoral fins used to corner small prey against reef rubble.
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Yellow-edged Moray
One of the largest reef morays, marked with an intricate maze-like pattern and a bright yellow-edged dorsal fin, hiding by day in rocky and coral crevices.
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Yellow Seahorse
A widespread and highly variable Indo-Pacific seahorse, commonly seen in bright yellow though also occurring in black, orange, or mottled brown, found from mangrove estuaries to coral reefs.
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Zebra Moray
The Zebra Moray is a striped Indo-Pacific reef eel with blunt, peg-like teeth specialized for crushing crabs, mollusks, and sea urchins.
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Whitetip Reef Shark
A slender nocturnal reef shark marked by distinctive white-tipped fins, often seen resting motionless inside reef caves and under ledges by day across the Indo-Pacific.
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Weedy Seadragon
A slender, reddish-purple relative of the seahorse decorated with small leaf-like fin projections and yellow stripes, found along the temperate reefs of southern Australia.
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White's Seahorse
White's seahorse is an endangered species endemic to the temperate estuaries of eastern Australia, best known for colonizing artificial structures like marina pylons and 'seahorse hotels' installed for conservation.
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Yellowbelly Damselfish
A small blue-grey damselfish with a bright yellow underside, found sheltering around coral and rubble on shallow reefs of the western Pacific.
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Whitespotted Moray
A brown moray eel densely covered in small, evenly spaced white spots, commonly seen with its head poking from crevices on shallow Indo-Pacific coral reefs.
reefTwo-spot Red Snapper
The two-spot red snapper, or bohar snapper, is a large, deep red Indo-Pacific reef predator, sometimes showing two pale saddle spots on the back, and an important predator on coral reef slopes.
reefZebra Seahorse
A small, boldly striped seahorse endemic to northern Australian waters, patterned with fine dark bands that give it a distinctly zebra-like appearance.
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Twinspot Wrasse
A large Indo-Pacific wrasse; juveniles are white with two red-and-black spots, while old males become bulky and greenish with a forehead hump.
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Yellow Boxfish
The Yellow Boxfish is a cube-shaped reef fish, bright yellow with black spots as a juvenile, that swims with slow, hovering movements thanks to its rigid armored body.
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Stoplight Parrotfish
A common Caribbean reef fish whose terminal-phase males show brilliant green bodies with a distinctive yellow spot at the tail base resembling a stoplight.
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Yellow Jack
A reef-associated western Atlantic jack easily recognized by the bright yellow wash on its fins and tail, often seen patrolling reef edges in small schools.
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Yellowhead Jawfish
A pale, yellow-headed jawfish that hovers above a self-dug sand burrow, diving in tail-first when startled.
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Yellow Watchman Goby
A bright yellow burrowing goby that forms a cooperative partnership with pistol shrimp, sharing a burrow while acting as lookout for the nearly blind shrimp.
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Zebra Shark
A slender, docile reef shark whose striped juveniles transform into leopard-like spotted adults, unmistakable due to its very long tail.
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Vermiculated Angelfish
A small pygmy-group angelfish with a bold yellow head, blue-black body etched with fine wavy vermiculated blue lines, commonly seen darting around coral rubble on Indo-Pacific reefs.
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Vermilion Snapper
A slender, vivid pinkish-red snapper of deep offshore reefs and hard bottom, feeding mainly on plankton picked from the water column rather than the substrate.
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Two-Banded Clownfish
An orange anemonefish with two broad white bars, the characteristic clownfish of the Red Sea and adjacent Gulf of Aden reefs, always found sheltering among host anemones.
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Unicornfish
A large gray-brown surgeonfish named for the forward-pointing bony horn projecting from its forehead, an important herbivore grazing tough brown algae on Indo-Pacific reef flats.
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Watchman Goby
The Watchman Goby is a bright yellow burrow-dwelling fish that forms a cooperative partnership with a pistol shrimp, hovering guard duty at the burrow entrance while the shrimp maintains the tunnel.
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Tiger Grouper
The tiger grouper is a slender reef grouper of the tropical western Atlantic marked with diagonal dark bars on a pale to reddish-brown body, resembling tiger-like striping.
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Volitans Lionfish
A large, boldly banded lionfish with dramatic trailing fins, an ambush predator now invasive across the western Atlantic.
reefBluestripe Fangblenny
An elongated blenny with a blue-and-black striped body that mimics cleaner wrasse to approach unsuspecting fish, using enlarged fangs to nip scales, mucus, or tissue before darting away.
reefPygmy Goby
One of the smallest vertebrates on Earth, this minute translucent goby perches in crevices on Indo-Pacific coral reefs and has an extraordinarily short lifespan.
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White Grunt
A stout, silvery reef fish with a bright orange-red mouth lining, known for the grinding sound it makes with its pharyngeal teeth.
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Undulated Moray
A common Indo-Pacific reef moray with bold wavy, maze-like dark markings over a pale body, often seen with its head poking from reef crevices.
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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.
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Sweetlips
Sweetlips is the common name for boldly striped reef fish of the genus Plectorhinchus, exemplified by the Oriental sweetlips, known for thick fleshy lips and dramatic juvenile-to-adult color change.
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Threadfin Trevally
An Indo-Pacific jack whose juveniles trail extraordinarily long thread-like fins, maturing into deep-bodied, steep-headed adults over sandy coastal bottoms and reef edges.
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Tarpon Snook Blenny
A slender, elongated pikeblenny with a pointed snout and torpedo-shaped body, sheltering in abandoned tube-worm holes on sandy reef flats and seagrass beds of the western Atlantic and Caribbean.
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Titan Triggerfish
The Titan Triggerfish is the largest triggerfish species, recognized by its olive-yellow body, pale moustache stripe, and famously territorial nest-guarding behavior on Indo-Pacific reefs.
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