helops, Acipenser Pallas [P. S.] 1814:97 [Zoographia Rosso-Asiatica v. 3; ref. 3351] Major rivers and seas of Russia. No types known. •Synonym of Acipenser stellatus Pallas 1771 -- (Berg 1948:96 [ref. 12882] as hellops, Svetovidov 1973:83 [ref. 7169], Coad 1995:7 [ref. 23608], Kottelat 1997:32 [ref. 22952], Sokolov 1998:22 [ref. 23571], Parin et al. 2014:44 [ref. 33547], Jouladeh-Roudbar et al. 2020:18 [ref. 37983]). Current status: Synonym of Acipenser stellatus Pallas 1771. Acipenseridae. Habitat: freshwater, brackish, marine.