Blackfin flounder

The blackfin flounder (Glyptocephalus stelleri) is a flatfish of the family Pleuronectidae. It is a demersal fish that lives in temperate waters at depths of between 8 and 1600 m, though it is most commonly found between 15 and 800 m. Its native habitat is the northern Pacific, from the Sea of Japan to the Strait of Tartary and southern Kuril Islands and out into the Bering Sea. It grows up to 52 cm in length, and can weigh up to 1.5 kg. Maximum reported lifespan is 23 years.

Diet
The blackfin flounder's diet consists of benthos invertebrates such as crustaceans, molluscs and worms.

Atavism
In 2005 a blackfin flounder was caught in Peter the Great Gulf, Russia that had its eyes on the left hand side of its body and corresponding reversal of pigmentation (see Bothidae). This is the first recorded instance of this form of atavism in the blackfin flounder.