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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 ...
Redwood Creek is home to a rare and endangered population coastal rainbow trout. [ 10 ] [ 2 ] Rainbow trout are native to many of the perennial streams of the San Francisco Bay Area, though they are currently extirpated from the majority of watersheds in the region as a result of land use changes, pollution and residential development ...
Kaiser Creek is unique among streams of the East Bay in that it retains a population of non-hybridized Coastal rainbow trout. [14] [3] As a result of rapid urbanization, drastic land use changes and a lack of understanding of local ecosystems in the 20th century, rainbow trout were extirpated from the majority of watersheds across the Bay Area ...
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. ... Few strong populations ...
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.
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]
Kern river rainbow trout are endemic to the Kern River and tributaries in Tulare County, California. [6] Its current range is drastically reduced from its historic range. Remnant populations live in the Kern river above Durrwood creek, in upper Ninemile, Rattlesnake and Osa creeks, and possibly in upper peppermint C
The Athabasca rainbow trout is primarily found in the cold headwaters of the Athabasca drainage in Alberta, Canada. [1] [2] The Athabasca rainbow trout is one of the few native rainbow trout populations found in an Arctic Ocean watershed. [3] The Athabasca River is a tributary of the Mackenzie River system which flows north into the Arctic ...