Abstract
The purpose of this work is to analyze some age, size, and demographic parameters of the Arctic char in the Pyasinsky Bay of the Kara Sea. In the control catches, fish aged from 2 to 10 years were noted, females aged 5-7 years and males aged 4-7 years predominated. The commercial length of individuals in catches was 300-820 mm, weight - 320-8100 g. The sex ratio was approximately 60:40 in favor of females. At the age of 5 years, sexually mature individuals were noted, the maturation period was extended to 7-8 years. In Pyasinsky Bay, arctic char is an obligate predator. The diet included polar cod (Boreogadus saida), four-horned slingshot (Myoxocephalus quadricornis), smelt (Osmerus mordax dentex) and whitefish (genus Coregonus), represented mainly by vendace. Occasionally met muksun, and omul. Polar cod formed the basis of feeding – more than 69% of the frequency of occurrence. The introduction of Arctic char into aquaculture is promising for the Krasnoyarsk Territory.
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