leucotica, Acipenser ruthenus var. Brandt [J. F.] 1853:320, Fig. 1 [Mélanges Biologiques, tirés du Bulletin physico-mathématique de l'Académie Impériale des Sciences de St. Pétersbourg v. 1; ref. 20902] Nishnij-Novgorod, Russia. No types known. Treated by Kottelat 1997:32 [ref. 22952] as infrasubspecific from Brandt 1851, available as above. •Questionably a synonym of Acipenser ruthenus Linnaeus 1758 -- (Kottelat 1997:32 [ref. 22952], Jouladeh-Roudbar et al. 2020:16 [ref. 37983]). Current status: Uncertain as Acipenser ruthenus Linnaeus 1758. Acipenseridae. Habitat: freshwater, brackish.