Estimation of morphometric and fish-breeding biological indicators of Siberian sturgeon (Acipenser baerii Brandt) from the Lena river population, rearing in the conditions of the Far North

Aquaculture is actively developing in the European North. This area is mainly based on using natural water bodies and the cultivation of cold-loving fish species. Sturgeon is a valuable and perspective object of warm-water aquaculture. Siberian sturgeon ( Acipenser baerii Brandt), unlike other members of this family, can be grown in farms of various types, including cages established in natural water bodies with low water temperatures. This feature makes it a perspective aquaculture object of the Northern regions. The results of rearing Siberian sturgeon ( Acipenser baerii Brandt) from Lena's River population in the Northern regions based on a fish farm in the Murmansk region have been presented. The rearing of two-year-olds and seven-year-olds of sturgeon in cages set up in Imandra Lake has shown a high survival rate and a good growth rate. The results of a comprehensive assessment of morphometric and exterior indicators of Siberian sturgeon have been estimated. The analysis of the measurements and calculated indices has shown that the males for reproduction have high values of fatness and wide-back coefficients...