ludoga, Coregonus Polyakov [I. S.] 1874:XXXI [Trudy St.-Peterburgskogo Obscestva Estestvoispytatelej = Travaux de la Société des Naturalistes de St. Pétersbourg. v. 5; ref. 19594] Lake Ladoga, Russia. No types known. Appeared as "Coregonus ludoga (Cor. Widegrenii Malmgr.)". Perhaps can be regarded as an unneeded substitute for Coregonus widegrenii Malgren 1863. Name preoccupied, replaced by Coregonus lutokka Kottelat, Bogutskaya & Freyhof 2005. •Synonym of Coregonus lavaretus (Linnaeus 1758) -- (Reshetnikov 1998:43 [ref. 23570]). •Synonym of Coregonus lavaretus (Linnaeus 1758), but a valid subspecies -- (Berg 1948:370 [ref. 12882]). •Questionably a synonym of Coregonus widegreni Malmgren 1863 -- (Kottelat 1997:119 [ref. 22952]). •See Bogutskaya & Naseka 2004:138 [ref. 28183]. Current status: Synonym of Coregonus widegreni Malmgren 1863. Salmonidae: Coregoninae. Habitat: freshwater, brackish, marine.