Commercial catches and biological parameters of smelt (Osmerus eperlanus (L.)) of lake Onega in modern conditions

The 5 years (2012-2016) data on fishery catches of smelt from Lake Onega and their biological indicators are presented in the article. The catches in focus contained fish of 2-6 years old. The weight of the studied fish ranged from 4 to 8 gr. Its length varied from 8 to 11 cm, with the modal group of four years old. The spawning part of the smelt population was dominated by males. The highest cumulative gain (linear and weight indexes) in the females of Onega smelt was observed during the third and fourth year of their life; in males the highest growth gain was registered in their third year of life.