Dynamics of stocks and biological indicators of the main commercial fish species of the Ivankovo reservoir for the period 1998–2021, their development by fishing

Abstract

Ivankovskoe reservoir, the oldest of the cascade of Volga reservoirs. Based on research materials from 1998 to 2021, a review of the dynamics of stocks and biological indicators of the main fish species of the Ivankovo reservoir has been prepared. Data on their stocks and catch by users are given, the resource capabilities of the reservoir are shown. Recommendations are given on the rational use of aquatic biological resources of the reservoir, it is proposed to resume industrial fishing and increase the catch of roach, grouper, perch, crucian carp, tench, etc. underutilized species by 20%, which will allow obtaining additional high-quality freshwater fish.