TY JOUR TI SIZE AND MASS CHARACTERISTICS AND PARAMETERS OF FISH PRODUCTIVITY OF TWO-YEAR RUSSIAN STURGEON, BRED IN PONDS IN MONOCULTURE AND IN POLYCULTURE WITH PHYTOVORUS FISHES KW sturgeon breeding KW Russian sturgeon KW two-years KW breeding in ponds KW monoculture KW polyculture KW mass KW zoological length KW length of body till the end of middle radials of the caudal fin KW coefficient of mass accumulation KW variability JO Vestnik of Astrakhan State Technical University. Series: Fishing industry AU Barakbaev, T.. AU Asylbekova, S.. AU Badryzlova, N.. AU Isbekov, K.. AU Fedorov, E.. PY 2015 IS 2015 PB Astrakhan State Technical University