sibiricus, Sterledus ruthenus var. Dybowski [B. N.] 1874:394 [Verhandlungen der K.-K. zoologisch-botanischen Gesellschaft in Wien v. 24 (no. 3-4); ref. 1172] Middle and lower Angara River, Siberia, Russia. Syntypes: whereabouts unknown. •Synonym of Acipenser ruthenus Linnaeus 1758 -- (Kottelat 1997:32 [ref. 22952], Jouladeh-Roudbar et al. 2020:16 [ref. 37983]). Current status: Synonym of Acipenser ruthenus Linnaeus 1758. Acipenseridae. Habitat: freshwater, brackish.