How big do those sturgeon get ?
IIRC they are the smaller ones, not exceeding 3' in captivity.
Siberian sturgeon = Acipenser baerii; Latin, acipenser = sturgeon
Acipenseriformes > Acipenseridae > Acipenserinae
FishBase: 200 cm; 210 kg; 60 y.
Fishing Word Records 153-200+ cm; 26-210 kg; 72 y.
Marine; f/w; brackish; demersal; anadromous; pH7.0-7.5; dH?-20
Temperate, 10-20°C; 74-46°N; 64-162°E (but are farmed in FL, juvies are ok even at low 80-ies F with vigorous aeration)
Siberia: Ob, Irtysh, Yenisei, Lena, Kolyma. Non-migr. pop. exist in Irtysh R. syst. Int. tr. restr. CITES II, 98.
Biol. Matures ~88 cm, 9-15 y m, 16-20 y f. Deep parts of large riv. w moder.-swift curr.
Adults live essent. in f/w, some frequent estuar. Spawn in main riv. chann. o/stone-grav.-sand w strong curr. Fisher.: high. commercial; a/c: commercial; P.A. Endang.