ratzeburgii, Acipenser Brandt [J. F.] in Brandt & Ratzeburg 1833:351, 352, Pl. 1a (fig. 3) [Medizinische Zoologie v. 2; ref. 619] Caspian Sea at mouth of Emba River. Holotype: ZIN 11760. •Synonym of Acipenser stellatus Pallas 1771 -- (Coad 1995:7 [ref. 23608], Kottelat 1997:33 [ref. 22952], Jouladeh-Roudbar et al. 2020:18 [ref. 37983], Çiçek et al. 2024:30 [ref. 40789]). •Synonym of Huso stellatus (Pallas 1771). Current status: Synonym of Huso stellatus (Pallas 1771). Acipenseridae. Habitat: freshwater, brackish, marine.