Montana Fish and Wildlife Conservation Office

Arctic grayling (Thymallus arcticus) is a freshwater fish in the same family (Salmonidae) as salmon, trout, and whitefish. A distinctive morphological characteristic of this fish is its large, sail-like dorsal fin. Arctic grayling is an obligate cool- or cold-water species....

Bull trout (Salvelinus confluentus) are members of the family Salmonidae and are char native Washington, Oregon, Idaho, Nevada, Montana and western Canada. Compared to other salmonids, bull trout have more specific habitat requirements that appear to influence their distribution and abundance....