TY JOUR TI Cultivation of African clariate catfish (Clarias gariepinus) in biofloc conditions: a comparative analysis with the installation of a closed water supply KW aquaculture KW African catfish KW biofloc KW biological treatment KW hydrochemical parameters KW feed conversion ratio KW fish farming JO Vestnik of Astrakhan State Technical University. Series: Fishing industry AU Rakov, A.. AU Grozesku, Y.. AU Nevalennyy, A.. PY 2026 IS 2026 PB Astrakhan State Technical University