macrophthalmus, Acipenser Heckel [J. J.] in Fitzinger & Heckel 1836:298 [Annalen des Wiener Museums der Naturgeschichte v. 1 (no. 12); ref. 2077] Not available, name only; also later as name in synonymy. •In the synonymy of Acipenser gueldenstaedtii Brandt & Ratzeburg 1833 -- (Kottelat 1997:30 [ref. 22952]). •In the synonymy of Huso gueldenstaedtii (Brandt & Ratzeburg 1833). Nomen Nudum. Current status: Synonym of Acipenser gueldenstaedtii Brandt & Ratzeburg 1833. Acipenseridae. Habitat: freshwater, brackish, marine.