kostera, Acipenser Fitzinger [L. J. F. J.] 1832:340 [Beiträge zur Landeskunde Österreichs unter der Enns, Wien v. 1; ref. 5019] Danube River, Vienna, Austria. Neotype: BMNH 1898.4.11.26. Neotype designated by Kottelat 1997:31 [ref. 22952]. •Synonym of Acipenser ruthenus Linnaeus 1758 -- (Kottelat 1997:31 [ref. 22952], Jouladeh-Roudbar et al. 2020:16 [ref. 37983]). •Synonym of Huso ruthenus (Linnaeus 1758). Current status: Synonym of Huso ruthenus (Linnaeus 1758). Acipenseridae. Habitat: freshwater, brackish.