Fish farming on riverbed ponds of the Azov-Kuban plain Alexey Abramchuk, Georgy Moskul, Natalia Pashinova, Dmitry Shumeyko and Vladislav Tyurin E3S Web Conf., 175 (2020) 02011 Published online: 29 June 2020 DOI: 10.1051/e3sconf/202017502011