Distribution of New Fish Species along the Navigable Waterways in the Water Bodies of Vologda Oblast

摘要

The paper summarizes the data on distribution of new fish species along the main waterways in the water bodies of Vologda oblast. The role of the Volga-Baltic waterway and North Dvina water system for invasion of fish in the basins of the Caspian, White, and Baltic seas is assessed. The data on the spreading of fish along the waterways within the catchment areas of the three seas, as well as through the borders between these areas, are analyzed.