Fishery value of Onega lake smelt (Оsmerus eperlanus L.) in modern conditions

The article is concerned with the value of smelt inhabiting fisheries of Karelian Lake Onega. Smelt is one of the main commercial fish species in the region. It was always ranked first in regional catches. The authors analyze official statistics on the volume of fish harvesting. Statistical data on fishing gear employed in the fish harvesting process were also studied. The reasons of the officially recorded decline in the fish harvesting volume are researched. Multiple data on the size, weight and age structure of the commercial part of fish population in different areas of the lake are presented. The study revealed no significant differences in the size-weight performance of the fish from different areas of the lake. A slight excess in the average weight and length in the smelt of all ages in the Karelian part of Onega Lake was registered. Smelt of the same age found in the Vologda part of the lake did not show any significant changes. Indicators reflecting the last decade’s dynamics in the numerical strength and biomass of Onega smelt are studied. As a result of the analysis it was revealed that the smelt’s fish stock is currently at its highest level and has tendency to increase.