DATA ON NUTRITION OF AMUR STURGEON <i>ACIPENSER SCHRENCKII</i> AND KALUGA <i>ACIPENSER DAURICUS</i> IN THE AMUR ESTUARY
Data on nutrition of Amur sturgeon and kaluga in the Amur estuary are presented for the first time. It is found that the main food of Amur sturgeon consists of polychaetes (75.2 %) and molluscs (more than 90 %), as crustaceans (71.9 %) and fishes (66.2 %) are dominant in kaluga food composition. Regional peculiarities of both species feeding in different areas of the Amur estuary are described.