RETRACTED: Use of ultrasonic screening in aquaculture for the directed formation sturgeon and salmon fish mature stocksMarina Korentovich, Alexander Litvinenko, Aial Egorov, Polina Zenkovich and Liudmila LitvinenkoBIO Web Conf., 84 (2024) 01052DOI: https://doi.org/10.1051/bioconf/20248401052