The Atka mackerel is a mackerel in the family Hexagrammidae. Atka mackerel are common in the northern Pacific Ocean, and are one of only two members of the genus Pleurogrammus - the other being the Arabesque greenling. The Atka mackerel was named for Atka Island, the largest island of the Andreanof islands, a branch of the Aleutians.
Image: Atka Mackerel caught near Homer AK
Image: Pleurogrammus monopterygius
A closeup of the head and face of an Atka mackerel.
The Bering sea and Aleutian chain as seen from space
Mackerel is a common name applied to a number of different species of pelagic fish, mostly from the family Scombridae. They are found in both temperate and tropical seas, mostly living along the coast or offshore in the oceanic environment.
Some species of mackerel migrate in schools for long distances along the coast and other species cross oceans
Still life with mackerel, lemon and tomato, Van Gogh, 1886
Mackerel, such as these Pacific jack mackerel, usually have vertical stripes on their sides which provide "schooling marks", visual clues that help them stay in formation as they school.
Gannets and other seabirds fuel themselves with mackerel