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Fish of KamchatkaPacific salmon

Sima

This is a thermophilic salmon with the main habitat in Japanese, Korean and Primorye rivers. Small quantities of this species are met in the rivers of western and eastern Kamchatka. It is characterized with a less number of branchiostegal rays (11 -14). Its length is up to 71 cm, weight – up to 9 kg. The average length is 46-67 cm. Silver sima’s body, size and dark spots are similar to those of silver salmon, and so is its mating dress with its bright pink crosswise stripes.

Among all pacific salmons, sima is the first to enter the rivers, which happens during the spring flood. Traditionally, the run starts in May and lasts until mid-July, the peak is observed in late May-June. Spawning lasts from late July till September. Spawning places are concentrated in river heads and spring fed sleeves. The roe is laid in the redds on pebble-silt grounds with slow flow. The young fish spends several years in freshwater before it migrates to the sea. 2-year-olds are divided into migrants and skeggers which linger in the river for another year (dwarf males). Sima underyearlings resemble silver salmon, but can be easily distinguished by green-metallic shine and whity-pink stripe along the lateral line. Migration towards the sea begins in spring and continues in the first half of summer. In the sea, sima feeds on crustaceans and sometimes young fish. Sima hibernates near Tsushima current and south-west of Sakhalin. In summer, its younglings are met in the Sea of Okhotsk and in the north-western part of the Japanese Sea.