Fish Species Proposed for Introduction: Montana Fish, Wildlife & Parks (FWP) propose transferring non-hybridized juvenile and adult westslope cutthroat trout (Oncorhynchus clarkii lewisi) to currently fishless Lange Creek (Sun River Drainage) from Chamberlain Creek (Belt Drainage). Lange Creek, a tributary to Gibson Reservoir in the Sun River Drainage is currently fishless because of a 200 foot waterfall just upstream of its confluence with Gibson Reservoir. Lange Creek has approximately 4 miles of habitable stream above the barrier. All of Lange Creek above the barrier is on Lewis and Clark National Forest. From 150 to 300 fish will be transferred by helicopter over a two to three year period. A minimum of 150 fish is required to reduce potential impacts of inbreeding depression in the new population. Fish from Chamberlain Creek have tested negative for potential fish diseases. No more than 10% of the estimated population’s fish greater than or equal to 6 inches and no more than 20% of the population’s fish < 6 inches will be moved.
