Christmas Flounder (Liopsetta glacialis)
Christmas Flounder (Liopsetta glacialis) – a sea fish, the family of flatfish (Pleuronectidae). It is common in the East Siberian, the White, the Barents, the Bering, and the Okhotsk seas. C.F. inhabits shallow depths and soft soils of coastal waters. It can migrate upriver far. The body length is 30–35 cm, usually 25 cm. Jaw teeth are shaped as incisors forming a cutting edge. The mouth is small and asymmetrical. The body of the male is covered with ctenoid scales, females with cycloid scales. The lateral line is almost straight. Behind the eye there is a grungy crest. The ocular part of the body is brown or dark olive with dark spots. On the dorsal, anal, and caudal fins, there are small and large spots. C.F. matures at the age of 4–5 years. Spawning occurs in January and February under the ice, not annually. Productivity is up to 200,000 eggs. It feeds on mollusks, crustaceans, worms, and small fish. The life span is 12 years. The fish is of minor economic value.