1. Montana Cooperative Fishery Research Unit, Department of Ecology Montana State University Post Office Box 173460 Bozeman Montana 59717 USA
2. U.S. Geological Survey, Montana Cooperative Fishery Research Unit, Department of Ecology Montana State University Post Office Box 173460 Bozeman Montana 59717 USA
3. U.S. National Park Service, Yellowstone Center for Resources, Native Fish Conservation Program Post Office Box 168 Yellowstone National Park Wyoming 82190 USA
4. Wyoming Natural Diversity Database University of Wyoming Laramie Wyoming 82071 USA
5. U.S. Fish and Wildlife Service Montana Ecological Services Office, 780 Creston Hatchery Road Kalispell Montana 59901 USA
6. Montana Fish Wildlife, and Parks, 490 North Meridian Road Kalispell Montana 59901 USA