Fish and Wildlife Service May 3, 2006 – Federal Register Recent Federal Regulation Documents

We, the U.S. Fish and Wildlife Service (Service), announce a 12-month finding on a petition to list a distinct population segment (DPS) of the roundtail chub (Gila robusta) in the lower Colorado River basin, and to list the headwater chub (G. nigra) as endangered or threatened under the Endangered Species Act of 1973, as amended (Act). The petition also asked the Service to designate critical habitat. After review of all available scientific and commercial information, we find that the petitioned action is not warranted for a DPS of the roundtail chub in the lower Colorado River basin, as explained below, but that listing is warranted for the headwater chub. Currently, however, listing of the headwater chub is precluded by higher priority actions to amend the Lists of Endangered and Threatened Wildlife and Plants. Upon publication of this 12-month petition finding, the headwater chub will be added to our candidate species list. We will develop a proposed rule to list the headwater chub as our priorities allow. Any determinations on critical habitat will be made during development of the proposed rule.