Sterletus Brandt [J. F.] & Ratzeburg [J. T. C.] 1833:3, 349 Masc. Acipenser ruthenus Linnaeus 1758. Type by monotypy. Original not examined; apparently as "Sterletae" (vernacular), a group within Acipenser; subsequent availability not researched. Objectively invalid; preoccupied by Sterletus Rafinesque 1820 in fishes. Also spelled Sterleta and Sterledus. •In the synonymy of Acipenser Linnaeus 1758. 1°Homonym. Current status: Synonym of Acipenser Linnaeus 1758. Acipenseridae.