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.
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
Seahorse
An unmistakable upright-swimming fish with a horse-like head and curled prehensile tail, notable for males carrying and giving birth to offspring.
reef
Lined Surgeonfish
A boldly striped blue, black, and yellow tang that fiercely defends algal-turf patches on shallow, wave-exposed reef crests across the Indo-Pacific.
reef
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.
reef
Spotted Seahorse
The spotted seahorse, also called the yellow seahorse, is a widespread Indo-Pacific species with a smooth body, low coronet, and highly variable coloring that ranges from plain yellow to dark blotched patterns.
reef
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.
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.
reef
Thorny Seahorse
A spiky Indo-Pacific seahorse covered in long, sharp bony projections, giving it a thorny, almost alien silhouette that helps it disappear among sponges and gorgonian coral.
reef
Pygmy Seahorse
A tiny, near-invisible seahorse that lives its entire life camouflaged on gorgonian sea fans in the Coral Triangle, its bulbous skin tubercles mimicking the coral's polyps exactly.
reef
Hedgehog Seahorse
One of the spiniest seahorses, the Hedgehog Seahorse is covered in numerous sharp, elongated body spines that give it a distinctly bristled silhouette against reef rubble.
reef
Longsnout Seahorse
A slender, long-snouted seahorse native to the western Atlantic that anchors itself to soft corals and mangrove roots with its prehensile tail. It comes in a wide range of colors, from yellow and orange to red and black.
reef
Dwarf Seahorse
One of the smallest seahorse species in the world, standing barely a few centimeters tall and clinging to seagrass blades in shallow waters of the southeastern United States and Bahamas.
saltwater
Barbour's Seahorse
A small, spiny-crowned seahorse native to the coral reefs and seagrass beds of the western Pacific, distinguished by fine dark banding along its snout.
reef
Orange-lined Triggerfish
The Orange-lined Triggerfish is a dark green triggerfish covered in bold curving orange stripes, one of the most vividly patterned fish on Indo-Pacific reefs.
reef
Long-snouted Seahorse
The long-snouted seahorse, also known as the spiny seahorse, is a slender species of the Mediterranean and northeastern Atlantic with a proportionally long snout and often ornate skin filaments used for camouflage in seagrass beds.
saltwater
Big-belly Seahorse
The largest seahorse species in the world, recognized by its notably rounded, protruding belly and mottled brown-yellow coloration, found along the temperate coasts of Australia and New Zealand.
saltwater
Six Line Wrasse
The Six Line Wrasse is a small, brightly colored reef fish with six narrow orange stripes running along a purple-blue body and a black spot near the tail, often darting through coral rubble.
reef
Tiger Tail Seahorse
A Southeast Asian reef seahorse easily recognized by the bold alternating light and dark stripes banding its prehensile tail, resembling a tiger's pattern.
reef
Short-snouted Seahorse
The short-snouted seahorse is a stocky, spiny-headed species found in coastal waters of the Mediterranean and eastern Atlantic, distinguished from its long-snouted relative by a notably short, thick snout.
saltwater
Ling
The ling is a long, eel-shaped member of the cod family found on deep rocky reefs of the northeastern Atlantic, distinguished by its elongated fins and single chin barbel.
saltwater
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.
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
Ling Cod
A large, elongated predator of the North Pacific coast known for its mottled camouflage and cavernous, tooth-filled mouth. Despite the name, it is not a true cod but a member of the greenling family.
saltwater
European Ling
A very large, elongated, eel-shaped cod relative found on deep rocky and muddy grounds along the continental shelf edge of the northeastern Atlantic.
deepsea