In order to restore the natural propagation of the most endangered sturgeon species of the Azov Sea basin – ship (A. nudiventris) and Azov beluga (H. huso) the Sturgeon Gene Pool Conservation Center “Kubanbioresursi” (subordinated to the Ministry of Natural Resources of the Krasnodar Region) for three years have been conducting the unique program of farmed mature sturgeon breeders release into their historical natural spawning grounds.