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.
Mudskipper
An amphibious goby that spends much of its life out of water, hopping across mudflats on muscular pectoral fins. Bulging, periscope-like eyes let it watch for predators while it hunts and defends its burrow.
brackish
Giant Mudskipper
The largest common mudskipper species, a heavy-bodied, predatory amphibious goby that patrols mangrove mudflats across South and Southeast Asia.
brackish
Atlantic Mudskipper
An amphibious goby that hops and skips across mangrove mudflats using muscular pectoral fins, breathing air through its skin and mouth lining when out of water.
brackish
Barred Mudskipper
An amphibious mangrove goby with bulging eyes and muscular fins that lets it crawl and hop across exposed mud at low tide throughout the Indo-Pacific.
brackishCombtooth Blenny
A general term for the large blenny family Blenniidae, small scaleless fish named for the comb-like row of fine teeth many species use to graze algae.
saltwater
Egg-laying Killifish
A general term for the many oviparous killifish species that scatter fertilized eggs rather than bearing live young, exemplified by the widespread blue panchax of South and Southeast Asian wetlands.
freshwater
Sand Tiger Shark
A bulky, fierce-looking but generally docile shark with protruding rows of needle-like teeth, commonly seen hovering near shipwrecks and reef caves along temperate and subtropical coastlines.
cartilaginous
Banded Knifefish
An elongated, eel-like South American fish that generates weak electric fields to navigate and communicate in murky water.
freshwater
Marbled Electric Ray
A bottom-dwelling electric ray capable of generating a strong electric shock, patterned with a mottled marbled coloration for camouflage on the seabed.
cartilaginous
Electric Catfish
An African freshwater catfish capable of generating strong electric discharges from specialized body tissue used for hunting and defense.
freshwater
Electric Ray
A round-bodied ray capable of generating a powerful electric shock from specialized organs, used to stun prey and deter predators.
cartilaginous
Silver Aba
A tail-less, eel-shaped African fish that swims by rippling a long dorsal fin and generates a weak electric field to sense its surroundings.
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
Black Ghost Knifefish
A uniformly black, blade-shaped freshwater fish that swims using a long undulating ventral fin and navigates using a weak electric field generated along its body.
freshwater
Electric Eel
A long, air-breathing South American knifefish, not a true eel, famous for generating powerful electric discharges from specialized organs used to stun prey, navigate, and defend itself.
freshwater