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Zachary Hooley-Underwood
Zachary Hooley-Underwood

Aquatic Research Scientist, Western Slope and Rio Grande Native fishes

Zachary Hooley-Underwood holding a sucker fish 

Contact Information

Colorado Parks and Wildlife
2300 S. Townsend Ave.
Montrose, CO 81401
Phone: (970) 252-6037


  • M.S., Zoology and Physiology — University of Wyoming, 2015

  • B.S., Fish, Wildlife, and Conservation Biology — Colorado State University, 2011

Current or Recent Positions

  • Aquatic Research Scientist — Colorado Parks and Wildlife, 2021-Present

  • Research Associate — Colorado Cooperative Fish and Wildlife Research Unit, 2019-2021

  • Fisheries Technician — Colorado Parks and Wildlife, 2016-2019

Current or Recent Research Projects

  • Protecting tributary-spawning native suckers from hybridization with non-native suckers through mechanical exclusion

  • Evaluating tributary selection and fidelity by Bluehead Sucker, Flannelmouth Sucker, and Roundtail Chub

  • Refining the known distribution of Bluehead Sucker, Flannelmouth Sucker, and Roundtail Chub in Colorado

Areas of Interest/Expertise

  • Native, non-game fish research and conservation

  • Colorado River basin native fishes - ecology, behavior, and management

  • Identifying fish movement patterns using complementary studies and technologies

  • Assessing fish population distribution and function

Selected Publications

Reprints: for any publications listed here that are not available as pdf files, you may contact Zachary Hooley-Underwood to request a reprint.

Kevin G. Thompson, and Zachary E. Hooley-Underwood. 2019. Present Distribution of Three Colorado River Basin Native Non-game Fishes, and Their Use of Tributary Streams. Colorado Parks and Wildlife Technical Publication 52.

Zachary E. Hooley-Underwood, Summer B. Stevens, Nicholas R. Salinas, and Kevin G. Thompson. 2019. An intermittent stream supports extensive spawning of large-river native fishes. Transactions of the American Fisheries Society 148:426-441.

Zachary Hooley-Underwood, Elizabeth G. Mandeville, Paul Gerrity, Joe Deromedi, Kevin Johnson, and Annika W. Walters. 2018. Combining genetic, isotopic and field data to better describe the influence of dams and diversions on burbot movement in the Wind River Drainage, Wyoming. Transactions of the American Fisheries Society 147: 606-620.

Zachary E. Hooley-Underwood, Summer B. Stevens, Kevin G. Thompson. 2017. Short-term PIT tag retention in wild populations of bluehead and flannelmouth suckers. North American Journal of Fisheries Management 37: 582-586.

David R. Stewart, Zachary E. Underwood, Frank. J. Rahel, Annika W. Walters. 2017. The effectiveness of surrogate taxa to conserve freshwater biodiversity. Conservation Biology. doi:10.1111/cobi.12967

Zachary Underwood, Elizabeth Mandeville, Annika Walters. 2016. Population connectivity and genetic structure of burbot populations in the Wind River Basin, Wyoming. Hydrobiologia 765: 329-342.

Zachary E. Underwood, Christopher A. Myrick, Robert I. Compton. 2014. Comparative swimming performance of five Catostomus species and roundtail chub. North American Journal of Fisheries Management 34: 753-763.

Christopher A. Myrick, Zachary E. Underwood, Kristoph D. Kinzli. 2013. Supporting undergraduate education with realistic laboratory exercises and research experience. Fisheries 38:160-168.

Zachary E. Underwood, Christopher A. Myrick, Kevin B. Rogers. 2012. Effect of acclimation temperature on the upper thermal tolerance of Colorado River cutthroat trout Oncorhynchus clarkii pleuriticus: thermal limits of a North American salmonid. Journal of Fish Biology 80: 2420–2433.