Author Hugh McCormick Smith (1865–1941)  
Description
English: Salvelinus namaycush (Walbaum). Lake Trout; Salmon Trout
Subject: Lake trout
Tag: Fish
Date 1890
Source/Photographer
English: Smith, Hugh M. (1892) Report of an Investigation of the Fisheries of Lake Ontario, Bulletin of the United States Fish Commission. vol.10 for 1890, Washington, DC: Government Printing Office
Source: https://commons.wikimedia.org/wiki/File:FMIB_37932_Salvelinus_namaycush_(Walbaum)_Lake_Trout;_Salmon_Trout.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.