Analysis of size-weight and age composition of catches of blue bream (Abramis ballerus, Linnaeus, 1758) from Sviyazhskiy Bay of the Volga Reach of the Kuibyshev Reservoir in 2018-2024

The article discusses the changes that have occurred over the past seven years in the biological parameters of the blue bream. The material was collected using fixed gill nets in the lower part of the Sviyazhsky Bay of the Kuibyshev Reservoir, in the period 2018-2024. An analysis and assessment of the transformations that occurred with biological indicators during the observations are provided, and these changes are compared with earlier periods of the reservoir ecosystem.