The Balkhash Lake is a large inland of water after the Caspian and Aral seas. The phenomenon of Balkhash is different mineralization on its western and eastern parts connected by a narrow strait. Western basin that receives water from the previously abundant in the western - fresh, eastern part of lake is salty. Nature of Balkhash is amazing and full of contrasts. Reservoirs Ili-Balkhash basin is one of the most significant in terms of biodiversity and the reproduction of valuable fish species.