colchica, Acipenser gueldenstadti var. Marty [V. J.] 1940:869 [Zoologicheskii Zhurnal v. 19 (no. 6); ref. 17607] Southeastern part of Black Sea near mouth of Rioni and Inguri rivers, Georgia, Eurasia. Syntypes: (many). •Synonym of Acipenser gueldenstaedtii Brandt & Ratzeburg 1833, but a valid subspecies -- (Berg 1948:84 [ref. 12882], Svetovidov 1973:82 [ref. 7169], Lelek 1987:25 [ref. 22962], Ninua & Japoshvili 2008:164 [ref. 31251]). •Synonym of Acipenser gueldenstaedtii Brandt & Ratzeburg 1833 -- (Kottelat 1997:30 [ref. 22952], see also Sokolov 1998:21 [ref. 23571]). •Synonym of Acipenser persicus Borodin 1897, but a valid subspecies -- (Reshetnikov et al. 1997:725 [ref. 24702]). •Synonym of Acipenser persicus Borodin 1897 -- (Bogutskaya & Naseka 2004:24 [ref. 28183]). •Valid as Acipenser colchicus Marty 1940 -- (Kottelat & Freyhof 2007:50 [ref. 29996], Çiçek et al. 2015:142 [ref. 35151], Çiçek et al. 2020:243 [ref. 37644], Dyldin et al. 2020:78 [ref. 37569], Dyldin et al. 2022:[9] [ref. 39193], Çiçek et al. 2023:328 [ref. 40625], Çiçek et al. 2024:27 [ref. 40789]). Current status: Valid as Acipenser colchicus Marty 1940. Acipenseridae. Distribution: Eurasia: southeastern Black Sea basin and lower Danube River (Romania, Bulgaria, Turkey, Georgia). Habitat: freshwater.