Bureau of Reclamation

Description

Razorback sucker (hereafter designated RBS) is one of four species of large, long-lived, endemic fishes that were once abundant and broadly distributed throughout the Colorado River basin (reviewed in Minckley and Marsh 2009). Water development and introduction and establishment of non-native species resulted in widespread extirpation and declines in distribution and abundance of these and other native species beginning early in the 20th century. The impact on RBS was especially profound. This catostomid fish was once abundant throughout much of the river. Unfortunately, these and other populations failed to recruit, resulting in dramatic reductions in the number and size of populations as adult fish aged and died, ultimately leading to its listing as endangered (U.S. Fish and Wildlife Service [USFWS] 1991). The species status continues to deteriorate despite substantial restoration efforts.

Who can apply

• Unrestricted

Contact

Jeremy Brooks, Grant Management Specialist, 702-293-8551<br/>jjbrooks@usbr.gov<br/>
jjbrooks@usbr.gov