Humpback Chub (image) Cary Institute of Ecosystem Studies Share Print E-Mail Caption Humpback chub are a federally-protected endangered species. Credit Emma Rosi-Marshall Usage Restrictions To promote this press release. Share Print E-Mail Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert! by contributing institutions or for the use of any information through the EurekAlert system.