Image of a biologist holding a Humpback Chub with the Colorado River in the background
Monitoring Humpback Chub in the Colorado River in Grand Canyon During fall 2021.pdf2.91 MB

Each fall, AZFWCO and partners study populations of endangered Humpback Chub (Gila Cypha) on the mainstem Colorado River in Marble and Grand Canyons. This report documents the fall 2021 trip in the context of past findings and future recommendations.

Author(s)
Michael Pillow
Michael Pillow
Fish Biologist
Fish and Aquatic Conservation
Additional Role(s)
Volunteer Coordinator,
Collateral Duty Safety Officer
Expertise
Population Monitoring,
Fish Translocations,
Fieldwork Logistics,
Information Technology,
Videography
Area
AZ
Flagstaff,AZ
Pilar (Wolters) Rinker
Pilar Rinker
Fish Biologist
Fish and Aquatic Conservation
Expertise
Fish Monitoring on the Colorado and Little Colorado Rivers,
Fish Research,
Fish Husbandry,
Razorback-Flannelmouth Hybridization
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Area
AZ
Flagstaff,AZ
Kirk Young
Publication date
Type of document
Report
Facility
Little Colorado River confluence
Arizona Fish and Wildlife Conservation Office
The Arizona Fish and Wildlife Conservation Office – or AZFWCO as we are more commonly known – is part of the U.S. Fish and Wildlife Service’s Fish and Aquatic Conservation Program. Established in eastern Arizona in 1956 as a fishery assistance office, AZFWCO has expanded to three stations, located...
Conservation Office
Flagstaff,AZ
Program
A man is fishing in a boat with three young girls. The kids are excitedly pulling a fish out of the water.
Healthy fisheries and waters are the foundation of America’s outdoor traditions and give us the freedom to fish, boat, and enjoy the benefits of outdoor recreation. The Fish and Aquatic Conservation programs work with states, tribes, and communities to provide a comprehensive approach to freshwater...
Program
Falls Church,VA
Close up of a California condor. Its pink featherless head contrasts with its black feathers.
We provide national leadership in the recovery and conservation of our nation's imperiled plant and animal species, working with experts in the scientific community to identify species on the verge of extinction and to build the road to recovery to bring them back. We work with a range of public...
Program
Falls Church,VA
Species
Ecosystem
Desert
River/stream
Subject tags
Endangered and/or Threatened species
Rivers and streams
Fisheries management
Fisheries
Population status
FWS and DOI Region(s)
Southwest