TY JOUR TI Histopathological analysis of Nile tilapia organs grown in aquaculture conditions in southern Russia KW aquaculture KW Nile tilapia KW gills KW liver KW spleen KW dystrophy KW necrosis JO Vestnik of Astrakhan State Technical University. Series: Fishing industry AU Kryuchkov, V.. AU Egorova, V.. AU Volkova, I.. AU Stepanenko, E.. PY 2026 IS 2026 PB Astrakhan State Technical University