Distribution and relative abundance of bream Abramis brama orientalis in the Western part of the Northern Caspian in summer 2010–2011

Data on the species composition of adult semi-anadromous fish in the western part of the Northern Caspian during the summer period are presented. Bream distribution in the sea area under exploration is considered depending on depth, salinity, temperature and transparency of water. Its relative abundance in the Northern Caspian is shown. Qualitative characteristics of bream population (age, size and weight, sex compositions) in the sea are analyzed.