TY JOUR TI GROWING CARP FINGERLINGS IN POLYCULTURE IN THE ASTRAKHAN REGION KW fish juvenile KW carp KW grass carp KW silver carp KW ponds KW stocking density KW food supply KW growth rate JO Vestnik of Astrakhan State Technical University. Series: Fishing industry AU Begmanova, A.. AU Mishchenko, A.. AU Saketova, K.. PY 2016 IS 2016 PB Astrakhan State Technical University