Author David Starr Jordan (1851–1931)  Barton Warren Evermann (1853–1932)  
Description
English: Cristivomer namaycush siscowet. Siscowet. (Drawn from specimen 18 inches long, taken in Lake Superior of Marquette, Mich.)
Subject: Lake trout
Tag: Fish
Date 1911
Source/Photographer
English: Jordan, David Starr; Evermann, Barton Warren (1911) Review of the Salmonid Fishes of the Great Lakes with Notes on the Whitefishes of Other Regions, Bulletin of the Bureau of Fisheries, vol.29, 1909, Washington, DC: Government Printing Office
Source: https://commons.wikimedia.org/wiki/File:FMIB_42868_Cristivomer_namaycush_siscowet_Siscowet_(Drawn_from_specimen_18_inches_long,_taken_in_Lake_Superior_of_Marquette,_Mich).jpeg

Lake trout (Salvelinus namaycush) is a freshwater char living mainly in lakes in northern North America. Other names for it include mackinaw, lake char (or charr), touladi, togue, and grey trout. In Lake Superior, it can also be variously known as siscowet, paperbelly and lean. The lake trout is prized both as a game fish and as a food fish.