State of ichthyofauna in the area of Yury Korchagin field
Ichthyological research held in the area of Yu. Korchagin field throughout 1998—2008 showed the high significance of this water area as a nursery ground for migratory and sea fish species. Apart from that, it is crossed by migratory fishes traveling to their spawning grounds and fry running from the river to the sea, while some sea fishes spawn here. The research indicates that negative changes of the state of water biological resources expressed in the reduction of number and stock rejuvenation of valuable commercial fish species started long before the launch of Yu. Korchagin field in 2009.