Fish farmers in the Great Lakes region of North America are trying to call their large trout “Salmon Trout” to indicate the larger size of the fish, even though this fish never leave fresh water. “Salmon Trout” is not actually allowed as an official name to sell under in North America, but it is being used anyway in some places.
Cutthroat trout have two red markings under their jaw. The length can be up to 18 inches (45 cm), and they can weigh up to 6 pounds (2 1/2 kg.) Their scientific Name is “Salmo clarki .”