It is frequently called "blackback" when it is smaller than 3 pounds and a "lemon sole" when it is larger. Like all flat fish, the winter flounder has both eyes on one side of the head. A newly hatched flat fish larva has one eye in each side of its head but within months it adapts to a bottom dwelling lifestyle, by which time one eye has moved to the other side of the head. Unlike most other bottom dwelling fish that rest by lying on their bellies, a flat fish rests on its side. Having both eyes on one side of its head enables the flat fish to rest on the ocean's floor while directing both eyes upward. The winter flounder is referred to as a right handed flounder because the eyes are located on its upper surface when the fish is pointing to the right. A 12" winter flounder is about 2 to 3 years old, a 20" winter flounder is about 9 to 10 years old. Female winter flounder grow faster than males and attain larger maximum sizes to about 8 pounds with a length of 25 inches and may live up to 15 years.