Combined length frequency of Yellowstone cutthroat trout in 29 annual spawning runs of Clear Creek, 1977–2007 (nine fish > 599 mm total length [all males] caught during 2005–2007 are not shown) and of Yellowstone cutthroat trout in 36 annual gillnet catches, Yellowstone Lake, 1969–2007. Home Page; By Ted Williams. But for fly fishers the big draw is the Yellowstone cutthroat, the only trout native to Yellowstone National Park. All three life forms spawn in tributary streams in the springtime when water temperature is about 10 degrees Celsius and flows are high (Liknes and Graham 1988). Westslope cutthroat trout explained. Biologists from the Montana Fish, Wildlife and Parks division, working with federal scientists from Yellowstone National Park recently outlined new measures that are being taken to preserve the native trout. Smart nature straight to your inbox every week Sign up for the newsletter “Conservation” is no longer enough. Photo: Yellowstone National Park, Native Fish Conservation Program. Life history Cutthroat trout exhibit both resident and migratory life history strategies through much of their current range. Yellowstone cutthroat trout. Twitter Facebook Mail Print. Freshwater life cycle Cutthroat Trout part of the Trout and Salmon fish family, predominantly anadromous fish, forming part of the Oncorhynchus class. August 19, 2015. Life cycle. They can grow as large as 7 pounds and attain an overall length of around 25 inches. Recovery: The Return of Native Fish, Victims of Bucket Biology . All three life forms spawn in tributary streams in the springtime when water temperature is about 10 degrees Celsius and flows are high (Liknes and Graham 1988). Cutthroat trout is a featured article; it (or a previous version of it) has been identified as one of the best articles produced by the Wikipedia community.Even so, if you can update or improve it, please do so. Rainbows in their original form are anadromous, with a life cycle that can include migration to the ocean from fresh water spawning grounds, which results in the Steelhead variant of … Twitter Facebook Mail Print. By Ted Williams. The westslope cutthroat trout (Oncorhynchus clarkii lewisi), also known as the black-spotted trout, common cutthroat trout and red-throated trout is a subspecies of the cutthroat trout (Oncorhynchus clarkii) and is a freshwater fish in the salmon family (family Salmonidae) of order Salmoniformes. The westslope cutthroat trout is the official state fish for the state of Montana. Yellowstone Cutthroat Trout typically spawn in spring and early summer after flows have declined from their seasonal peak and tend to select sites with suitable substrate (gravel less than 85 mm in diameter), water depth (9 to 30 cm), and water velocity (16 to 60 cm per second) (Varley and Gresswell 1988, Byorth 1990, Thurow and King 1994).