Abstract
During a period of high stock levels chub mackerel migrates to Russian waters for feeding and become available for domestic fisheries. In 2016, the domestic mackerel fishery was organized after a long break. Mackerel catches increased until 2018, followed by a slight decline. Based on the materials of the autumn survey conducted in Russian waters of the Northwest Pacific Ocean in 2020, the size and age composition, biological condition and nutrition of chub mackerel during feeding in the South Kuril zone is given.
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