TY JOUR TI BIOLOGICAL CHARACTERISTICS OF AZOV SHAD (ALOSA CASPIA TANAICA) FROM THE RIVER PROTOKA KW Azov shad KW spawning KW age structure KW sexual structure KW fertility KW condition factor JO Vestnik of Astrakhan State Technical University. Series: Fishing industry AU Lyapalo, K.. AU Shumeyko, D.. AU Emtyl, M.. PY 2015 IS 2015 PB Astrakhan State Technical University