Arctic Char のバックアップ(No.4)

Arctic Char

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English
The Arctic Char is closely related to the salmonids. They spawn in the rivers of Iceland, Norway, Spitsbergen, Novaya Zemlya, along the coast of Siberia (the Ob, Yenisei), in the rivers of Canada, Alaska and Greenland. Local forms are found in alpine lakes and the Baikal basin. They live in the Pacific basin:from Korea to California. They lead a predatory life. Arctic char feed on invertebrates and fish. The char reach a length of 80 cm and a mass of 15 kg. Body color is silvery, the back is bluish-gray, the sides are covered with large light spots. Covered with very small scales. At the entrance to the river, the fish darkens, the back acquires a greenish-brown color, and the sides are covered with numerous red-orange spots. The belly is usually grayish-white, but the spawning char is bright red. Characteristic of these fish is the arrangement of the nests. Irrigated eggs are protected by the guard, actively driving away other fish. The young char spends 3-4 years in the river, then goes to sea. It is forbidden to catch char as they make their way to sea. Lacustrine forms (sometimes can be described as separate species) grow and spawn without leaving the lake. They are usually darker than the anadromous, the belly is pink, the anterior rays of the paired fins, and also the lower ray of the anal fin are white. The sides are covered with yellowish orange spots. Sometimes the coloring can be almost black. They reach weights from 2 to 7 kg.

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