Another peculiar variety of the cutthroat trout is found in Lake Southerland of Eastern Washington. Its distinguishing features are its orange-red fins and intensely black spots which are very profuse. It is a gamy fish and full of fight to the finish.
In several of the lakes of Washington there are varieties of trout differing in coloration and location of their spots that have been given specific names by the naturalist, such as crescent trout, beardslee trout and bathaecetor trout, all residents of Crescent lake. But as they all belong to the cutthroats and vary each from the other but little, further mention is unnecessary.
RIO GRANDE TROUT
(Salmo spilurus)
The Rio Grande trout, which is also a cutthroat, has a very limited distribution within the territorial scope of this work. It is found in the streams of the eastern slope of the Sierra Madre Mountains of Chihuahua, Mexico. Its head is shorter and more rounded than the other species of the cutthroat, with a mouth also very large. The spots are principally confined to the latter half of the body and most profuse on the tail.
COLORADO RIVER TROUT
(Salmo pleuriticus)
The Colorado river trout, also a cutthroat, is the common trout of Arizona, where it is found in nearly all the mountain streams of the territory which flow to the Colorado river. It differs only from the typical cutthroat by having its spots mostly on that part of the body behind the dorsal fin; and the lower fins strongly marked with red.
DOLLY VARDEN TROUT
(Salvelinus parki)