20130713_AZ_GrandCanyon_dheraimtschuk _MG_9499.jpg
![Photo of an endangered humpback chub in the Grand Canyon.](https://d9-wret.s3.us-west-2.amazonaws.com/assets/palladium/production/s3fs-public/styles/full_width/public/thumbnails/image/20130713_AZ_GrandCanyon_dheraimtschuk%20_MG_9499.jpg?itok=TUc0Wfgm)
Detailed Description
Endangered humpback chub in the Grand Canyon rely on aquatic insects as a primary food source. ©Freshwaters Illustrated
Endangered humpback chub in the Grand Canyon rely on aquatic insects as a primary food source. ©Freshwaters Illustrated