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The rainbow trout (Oncorhynchus mykiss) is a species of trout native to cold-water tributaries of the Pacific Ocean in North America and Asia. The steelhead (sometimes called steelhead trout) is an anadromous (sea-run) form of the coastal rainbow trout (O. m. irideus) or Columbia River redband trout (O. m. gairdneri) that usually returns to freshwater to spawn after living two to three years ...
Historically, efforts in Washington have been made that seek similar results. Both brown trout and lake trout were introduced into various lakes within the Washington Cascades and monitoring took place over a 20-year span. While minimal improvements were noted with brown trout introductions, the largest success came from lake trout introductions.
The Beardslee trout (Oncorhynchus mykiss irideus f. beardsleei) is a local form of rainbow trout endemic to Lake Crescent in the Pacific north-western US state of Washington. Some sources treat them as a subspecies. Known to locals as "bluebacks", Beardslee trout are found nowhere else, and spawn in the Lyre River, near the
Jul. 16—Most rainbow trout swimming in Montana's waters are not native to the state — with the singular exception of the redband trout in the Kootenai drainage.
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The Texas Parks and Wildlife Department will stock about 344,000 rainbow trout across the state, including two ponds in Wichita Falls.
Steelhead in 1924 illustration using the original taxonomic name, Salmo gairdneri The freshwater form of the steelhead is the rainbow trout (Oncorhynchus mykiss).The difference between these forms of the species is that steelhead migrate to the ocean and return to freshwater tributaries to spawn, whereas non-anadromous rainbow trout do not leave freshwater.
Rainbow trout (Oncorhynchus mykiss), native to Pacific Ocean tributaries in North American and Asia was first introduced into the Gibbon River, above and below Gibbon Falls in 1890. In 1923, Rainbow trout were introduced into the Firehole River above Firehole Falls. Rainbow trout have also been introduced into a number of Yellowstone lakes.