BIOLOGY OF COMMERCIAL FISH RESERVOIRS OF THE SNNP «KOKSHETAU»

Abstract

This article presents the results of research on the current composition of the ichthyofauna of 6 lakes of the state national natural Park «Kokshetau».In total, 14 species of fish from 6 families were found in the surveyed reservoirs.Of these, common pike, roach, tench, golden carp, silver carp, minnow, char, common perch,       17 ruff, northern nine-headed stickleback are native, and bream, carp, peled, and grouse are acclimated.The carp family is most widely represented in the reservoirs of the national рark.The maximum life span of common perch was 9+ years, roach, bream, tench-8+ years, silver carp and common pike-7+ years, carp 6+ years and whitefish family 4+ years.The population is dominated by younger and middle-aged individuals. The average age of populations indicates stable replenishment and smooth replacement of age classes, which shows favorable conditions for species habitat.According to the results of research, it was found that in the lakes of the Kokshetau state enterprise it is possible to organize various types of fishing: Amateur (sports), reclamation, as well as fishing for reproductive purposes.