What is the scientific name of the lake trout, a freshwater char native to North America?

The scientific name of the lake trout is Salvelinus namaycush.

Lake trout are freshwater chars in the salmon family, Salmonidae. They are native to much of Canada and the northern United States, where they inhabit deep, cold lakes and some large rivers.

Unlike many salmon and trout, lake trout commonly spend their entire lives in freshwater. They prefer cold, oxygen-rich water and may occupy depths below the zones used by many other fish. Their diet includes smaller fish, crustaceans, and aquatic insects.

Lake trout are not the same species as brook trout, whose scientific name is Salvelinus fontinalis. Both are chars, but lake trout are generally larger and have a deeply forked tail. Their flesh and size have made them important targets for commercial and recreational fisheries.