Author Jonathan Couch (1789–1870)  
Description
English: Lake Trout
Buddagh Grey Salmo ferox
Subject: Lake trout
Tag: Fish
Date 1877
Source/Photographer
English: Couch, Jonathan (1877) History of the Fishes of the British Isles, London: George Bell & Sons
Source: https://commons.wikimedia.org/wiki/File:FMIB_46335_Lake_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.