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.
Bigfin Squid Fish
Despite the common name, this is not a true fish but a rarely filmed deep-sea cephalopod, famous for extraordinarily long elbowed arms trailing beneath a small gelatinous body.
deepsea
Black Swallower
A small deep-sea fish renowned for an extraordinarily distensible stomach that lets it engulf prey several times its own body length and mass in a single strike.
deepsea
Blobfish
A gelatinous deep-sea sculpin whose flesh is slightly less dense than water, letting it hover just above the seafloor without expending much energy swimming.
deepsea
Barreleye
The barreleye, or spookfish, is a deep-sea fish with a transparent, dome-shaped head revealing barrel-shaped, upward-rotating tubular eyes, unlike any other fish.
deepsea
Anglerfish
A bizarre deep-sea predator that lures prey with a bioluminescent lure atop its head, adapted to life in total darkness at crushing ocean depths.
deepsea
Atlantic Hagfish
The Atlantic hagfish is a primitive, eel-like, jawless scavenger known for producing enormous quantities of defensive slime and for its ability to feed inside the carcasses of dead or dying animals on the seafloor.
deepsea