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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 ...
Although brook trout populations are under stress in their native range, they are considered an invasive species where they have been introduced outside their historic native range. [ 71 ] [ 72 ] [ 73 ] In the northern Rocky Mountains, non-native brook trout are considered a significant contributor to the decline or extirpation of native ...
Non-native, invasive species are quick to adapt to their new environment and learn to outcompete any native species, making them a force the native salmon and trout have to reckon with. Not only do the non-native fish drive the native fish to occupy new niches, but they also try to hybridize with them, contaminating the native gene construction.
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. While common throughout most of ...
Historically, cutthroat trout was considered one species (Oncorhynchus clarkii).[2] [9] However, recent genetic, taxonomic, and geologic [10] evidence has determined that cutthroat trout should be divided into four species, with each (except for the coastal cutthroat) having multiple subspecies corresponding to the evolutionary lineages [11] found within major river basins.
The Bonneville cutthroat trout (Oncorhynchus clarkii utah) is a subspecies of cutthroat trout native to tributaries of the Great Salt Lake and Sevier Lake. [2] Most of the fish's current and historic range is in Utah, but they are also found in Idaho, Wyoming, and Nevada. This is one of 14 or so recognized subspecies of cutthroat trout native ...
The fish are Lahontan cutthroat trout, a species native to the Great Basin of California, Nevada and Oregon. ... Apr. 19—Stand on the shore of Lake Lenore and watch the shallows long enough, and ...
Despite not being closely related to true trout, they are sometimes called South American trout. [2] Members of the genus may be referred to by a number of other different common names in various languages. They reach a maximum length of 11.9–79.5 cm (4.7–31.3 in) depending on the species involved. [1]