This article presents data from literature sources and field studies on the ecological features of fish species common to the Aidar-Arnasay lakes system, both those with and without hunting significance. It includes information on the distribution, movement patterns, occurrence at various depths and ages, and indicators of the dominant abundance of these fish species. Coordinate points are established based on the locations where these species are found. During the control catches, fishing nets made of silk and artificial fibers were used, measuring 70 to 100 meters in length with a mesh size ranging from 15 to 70mm. The control catch yielded over 2,500 fish specimens, collected through more than 200 deployments and retrievals of the nets.