The Dolly Varden trout is a species of salmonid ray-finned fish native to cold-water tributaries of the Pacific Ocean in Asia and North America. Despite the name "trout", it belongs to the genus Salvelinus (chars), which includes 51 recognized species, the most prominent being the brook, lake and bull trout as well as the Arctic char. Although many populations are semi-anadromous, riverine and lacustrine populations occur throughout its range. It is considered by taxonomists as part of the Salvelinus alpinus complex, as many populations of bull trout, Dolly Varden trout and Arctic char overlap.
Dolly Varden trout
Dolly Varden fingerling at Hokkaido Japan aquarium, probably Salvelinus malma miyabei
A freshly caught fish
Dolly Varden in crystal clear river at the Bering Land Bridge National Preserve
Salvelinus is a genus of salmonid fish often called char or charr; some species are called "trout". Salvelinus is a member of the subfamily Salmoninae within the family Salmonidae. The genus has a northern circumpolar distribution, and most of its members are typically cold-water fish that primarily inhabit fresh waters. Many species also migrate to the sea.
Salvelinus
Salvelinus killinensis, Scotland
Salvelinus alpinus, Salvelinus colii and Salvelinus grayi, Irish taxa
Whitespotted char, Salvelinus leucomaenis