Sturgeon fish (Acipenseridae) of the Yenisei river in aquaculture (review)

The chronology of fish-breeding works with the Siberian sturgeon and sterlet of the basin of the river Yenisei is given. It is shown that the Beloyarsk (Abakansky) sturgeon and whitefish hatchery at the Krasnoyarsk reservoir became the first specialized enterprise. Initially, the activity of this enterprise was determined by the reconstruction of the ichthyofauna of the reservoir. A biotechnology was developed for growing sturgeon fry for stocking the Krasnoyarsk reservoir with fish, taking into account the technical condition of the fish factory and the climatic features of Eastern Siberia. Currently, the plant operates to support the natural reproduction of sturgeon in the basin of the river Yenisei. A scheme has been introduced to support the natural reproduction of the Yenisei sturgeon by rearing juveniles at enterprises of various forms of ownership. A line of fish-breeding work has been developed, based on a cycle of sturgeon breeding to obtain and grow juveniles in places of natural spawning grounds using a temporary fish-breeding complex of a modular design. Commercial cultivation of Siberian sturgeon and sterlet is carried out at enterprises that have warm waste water or recirculation plants (recirculating water supply plants). It is shown that the artificial regulation of the parameters of the aquatic environment (temperature, chemical composition corresponded to natural water) accelerates the maturation of sturgeons of the river Yenisei. Incubators and fish breeding shops of fish farms make it possible to grow up to 19 million fish per year. juveniles of the Siberian sturgeon and sterlet, and in the summer to release juveniles in the amount of 2 to 4 million specimens. The current stage of sturgeon biotechnology is the creation of broodstock, genetic testing of producers and their subsequent chipping.