Melanogrammus 
aeglefinus

Melanogrammus aeglefinus

Commonly known as haddock, it is a demersal fish found from 10 to 450 m depth, more common from 80 to 200 m, over rock, sand, gravel or shells, usually at temperatures between 4 and 10C. Haddock undertake extensive migrations in the Barents Sea and Iceland, and more restricted movements in the northwestern Atlantic, mostly to and from the spawning grounds. The haddock rarely exceeds 1 m total length.