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The greenback cutthroat trout (Oncorhynchus clarkii stomias) is the easternmost subspecies of cutthroat trout. The greenback cutthroat, once widespread in the Arkansas and South Platte River drainages of Eastern Colorado and Southeast Wyoming, today occupies less than 1% of its historical range. It is currently listed as threatened under the ...
The cutthroat trout is the state fish of Idaho, Montana and Wyoming, while particular subspecies of cutthroat are the state fish of Colorado, Nevada, New Mexico and Utah. Idaho [112] Montana [113] and Wyoming [114] –Cutthroat trout (O. clarki) Colorado–Greenback cutthroat trout (O. v. stomias) Nevada [115] –Lahontan cutthroat trout (O. h ...
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 Lahontan cutthroat is native to the drainages of the Truckee River, Humboldt River, Carson River, Walker River, Quinn River, and several smaller rivers in the Great Basin of North America. [6] These were tributaries of ancient and massive Lake Lahontan during the ice ages until the lake shrank to remnants such as Pyramid Lake and Walker ...
Both lakes held small greenback cutthroat trout from the early days of the Wild West, but in the mid-1880s reports circulated of much larger trout, up to 10 pounds (5 kg) in weight, with bright yellow fins. Recent research has speculated that the yellowfin cutthroat may have been native to the entire Arkansas River basin, not just Twin Lakes. [2]
During his career he authored more than 100 articles and papers regarding fish and fisheries. He is credited with helping re-discover two native trout subspecies previously believed extinct—the Pyramid Lake strain of the Lahontan cutthroat trout and the Greenback cutthroat trout, the state fish of Colorado. [10]
The coastal cutthroat trout (Oncorhynchus clarkii clarkii), also known as the sea-run cutthroat trout, blue-back trout or harvest trout, is one of the four species [3][4] of cutthroat trout found in Western North America. The coastal cutthroat trout occurs in four distinct forms. A semi- anadromous or sea-run form is the most well known.
These trout are found in high-country lakes and stream in the cool mountains. The native subspecies that feed on aquatic and terrestrial insects can grow up to 12 inches. [91] NE Found in the upper Colorado River basin. Greenback cutthroat trout: Oncorhynchus clarki stomias: An endangered species that is in the process of recovery of its ...