4683 Acipenser baerii Brandt, 1869 Acipenseridae Sturgeons Acipenseriformes Chondrostei Siberian sturgeon Asia: Siberia, rivers Ob, Irtysh, Yenisei, Lena, Kolyma, Khatanga, Pyasina, Anabar, Olenyok, Yana and Lake Baikal (Ref. 57765). Non-migratory populations exist in all river systems (Ref. 57765). P A1052.0001 Acipenser baeri P 96006.0001 Acipenser baeri