1. Larval Fish Laboratory, Department of Fish, Wildlife, and Conservation Biology, Colorado State University, Mail Stop 1474, Fort Collins, Colorado 80523, USA
2. Utah Division of Wildlife Resources, Northeastern Regional Office, 318 North Vernal Avenue, Vernal, Utah 84078, USA
3. U.S. Fish and Wildlife Service, Green River Basin Fish and Wildlife Conservation Office, 1380 South 2350 West, Vernal, Utah 84078, USA