1. U.S. Geological Survey, New Mexico Cooperative Fish and Wildlife Research Unit, Department of Fish, Wildlife and Conservation EcologyNew Mexico State UniversityBox 30003, Mail Stop Code 4901 Las CrucesNew Mexico88003USA
2. U.S. Department of AgricultureAgricultural Research Service, Hagerman Fish Culture Experiment Station3059‐F National Fish Hatchery RoadHagermanIdaho83332USA
3. U.S. Fish and Wildlife ServiceDexter National Fish Hatchery and Technology Center7116 Hatchery Road, DexterNew Mexico88230USA
4. New Mexico State University, University Statistics CenterPost Office Box 30001, Las CrucesNew Mexico88003USA