polonica, Coregonus lavaretus forma Kulmatycki [W. J.] 1926:328 [Archiwum hydrobiologii i rybactwa [Archives d'Hydrobiologie et d'ichtyologie] v. 1 (no. 4); ref. 19638] Putziger Wiek, western portion of Gulf of Danzig, Poland. No types known. •Synonym of Coregonus lavaretus (Linnaeus 1758) -- (Berg 1948:362 [ref. 12882], Svetovidov 1973:148 [ref. 7169]). •Synonym of Coregonus widegreni Malmgren 1863 -- (Kottelat 1997:119 [ref. 22952], Parin et al. 2014:126 [ref. 33547]). Current status: Synonym of Coregonus widegreni Malmgren 1863. Salmonidae: Coregoninae. Habitat: freshwater, brackish, marine.