 The high price of sturgeon caviar—more than 1,500 Azerbaijani manats (US$880 ) per kilo—allows fishermen to afford bribes to ensure the authorities look the other way, making regulations in many locations ineffective.Caviar harvesting further endangers the fish stocks, since it targets reproductive females.Many rare and endemic plant species of Russia are associated with the tidal areas of the Volga delta and riparian forests of the Samur River delta.