Wild rainbow trout (Salmo gairdneri) were marked and released (N = 470) in Valley Creek, a small stream in east-central Minnesota. Subsequent sampling indicated no significant upstream or downstream movement over 2.5 years. A regression analysis of the transformed and weighted ratios of marked-to-total fish captured against time was used to determine if significant movement occurred. The lack of movement may be a feature of a genetically distinct nonmigratory race, individuals of which may occupy home territories throughout their lifetime.