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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 ...
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.
The redband trout are generally similar in appearance to the coastal rainbow trout (O. m. irideus) but have larger, more rounded spots, parr marks that tend to remain into adulthood, are more orange-red around the lateral line and have very distinct white tips on the anal, dorsal and pectoral fins. They will exceed 10 inches (25 cm) at maturity ...
The rainbow trout has a steelhead subspecies, generally accepted as coming from Sonoma Creek. The rainbow trout of New Zealand still show the steelhead tendency to run up rivers in winter to spawn. [2] In Australia, the rainbow trout was introduced in 1894 from New Zealand and is an extremely popular gamefish in recreational angling. [3]
The McCloud River hatchery indiscriminately mixed coastal rainbow trout (O. m. irideus) eggs with the eggs of local McCloud River redband trout (O. m. stonei). Eggs from the McCloud hatchery were also provided to the San Leandro hatchery, thus making the origin and genetic history of hatchery-bred rainbow trout somewhat diverse and complex. [4]
The Columbia River redband trout, [1] the inland redband trout [2] or the interior redband trout [1] (Oncorhynchus mykiss gairdneri) is one of three redband trout subspecies of the rainbow trout in the family Salmonidae. [3] It is native in the Columbia River and its tributaries in Idaho, Oregon, Washington and Montana.
The Sheepheaven Creek redband trout is a local Californian variety of the rainbow trout (Oncorhynchus mykiss), a freshwater fish in the family Salmonidae.It is considered either a distinct western form of the McCloud River redband trout (subspecies Oncorhynchus mykiss stonei), [1] or a subspecies of its own, which has not been scientifically named and described yet. [2]