Alaska pollack are very similar to cod in that the body is elongated and the head has several characteristic whiskers (barbels). Their ventral fin is continuous and the dorsal fins are almost seamlessly connected. A distinguishing feature of the pollack is its curved lateral line.
The Alaska pollack is a rather small fish, growing to a maximum length of 80 centimetres. The life span is up to 15 years. They prefer to inhabit the bottom of the sea and feed on all sorts of sea life which share this habitat, such as young herrings or salmon. The Alaska pollack reaches sexual maturity at the age of three to four years. It is then extremely fertile and can lay as many as 15 million eggs year.