Wolf eel

The wolf eel (*Anarrhichthys ocellatus*) is a marine ray-finned fish in the wolffish family, not a true eel.

The wolf eel (*Anarrhichthys ocellatus*) is a marine ray-finned fish in the wolffish family, not a true eel. It is native to the North Pacific Ocean, where it inhabits rocky reefs, caves, and crevices. This species is the only member of its genus.

Taxonomy and naming

The wolf eel is scientifically named *Anarrhichthys ocellatus* and belongs to the family Anarhichadidae. Despite its name and body shape, it is not a true eel.

Physical characteristics

Wolf eels have long, eel-like bodies, large heads, and strong jaws with teeth suited to crushing hard prey. Juveniles are often more brightly coloured than adults, which are usually grey or mottled.

Distribution and habitat

This species occurs in the cold waters of the North Pacific, from Japan and the Sea of Okhotsk to Alaska and southern California. It commonly inhabits rocky reefs, boulder fields, caves, and other sheltered crevices, often near the seabed.

Diet and behaviour

Wolf eels feed mainly on hard-shelled invertebrates such as crabs, urchins, clams, mussels, and snails, along with some fish and squid. They are typically sedentary and spend much of their time in dens, and are often described as slow-moving and generally non-aggressive toward divers.

Conservation

The wolf eel is generally listed as Least Concern, reflecting a broad distribution and no major global conservation concern in the sources provided.