The Atlantic wolffish (Anarhichas lupus), also known as the seawolf, Atlantic catfish, ocean catfish, devil fish, wolf eel (the common name for its Pacific relative), woof or sea cat, is a marine fish of the wolffish family Anarhichadidae, native to the North Atlantic Ocean.

The Atlantic wolffish (Anarhichas lupus) is a voracious predator found in the cold waters of the North Atlantic Ocean from northern Europe to eastern Canada, including the Arctic Ocean.

The Atlantic Wolffish – scientific name Anarhichas lupus – has many names, including devilfish, wolf eel, Atlantic catfish, seawolf, ocean catfish, sea cat, or woof. It is one of many fish species that classify as the Anarhichadidae wolffish family.

The genus name Anarhichas is an Ancient Greek name for the Atlantic wolffish (A. lupus) and means “the climber,” in turn derived from the Greek anarrhichesis which means, “to climb or scramble up”, this may be an allusion to the ancient belief that wolffishes left the water and climbed up on the rocks.