Atlantic Ocean

Haddock (Melanogrammus aeglefinus), also known as Scrod; weight – .9 to 3 kg (2 to 7 lb); length – 30 to 90 cm (1 to 3 ft) at maturity; lifespan – 10 or more years. A major Atlantic Ocean commercial fish, Haddock are a member of the cod family, but they are smaller than Atlantic Cod. They may be distinguished by a black “thumbprint” found on each side of their body. Haddock feed on a variety of bottom-dwelling animals, including mollusks, worms, crustaceans, sea stars, sea urchins, sand dollars, brittle stars, and occasional fish eggs. Adults sometimes eat small fish, especially herring. Image courtesy of NOAA.