During the study period 1964 -2015. researchers of the branch of environmental monitoring is carried out in the district. Ural, r.Kigach and the Caspian Sea with a view to the systematic study of hydrology, hydrochemistry, toxicology, forage fish, fish food, fish fauna, as well as the development of practical measures and recommendations to reduce the adverse effects of human activities. In all years, and so far focused on the conservation of sturgeons. Annually, there are observations of the distribution and the formation of the sturgeon and semi-fish species, their specific structure, feeding conditions. It determined by the dynamics of the spawning run manufacturers of commercial fish in the river. Ural, evaluated the effectiveness of natural reproduction of sturgeons and semi-migratory fish.