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US formally removes Colorado River fish’s endangered status

FILE - This undated photo provided by the U.S. Fish and Wildlife Service shows a humpback chub in the Colorado River in Colorado near the Utah border. The humpback chub, a rare fish found only in the Colorado River basin, has been brought back from the brink of extinction after decades of protection, though continued work is needed to ensure its survival, federal authorities said Monday, Oct. 18, 2021, in reclassifying the species from endangered to threatened status. (Travis Francis/U.S. Fish and Wildlife Service via AP, File)

DENVER (AP) — The U.S. Fish and Wildlife Service has reclassified a rare Colorado River Basin fish called the humpback chub from endangered to threatened status after a decades-old effort to stabilize its populations.

The fish with a fleshy bump behind its head is one of about a dozen that are native to the Colorado River system and four that are currently endangered _ a designation it received in the late 1960s.

Federal officials say the numbers have stabilized but that the fish needs continued protections in the Grand Canyon and parts of Utah and Colorado. It once had a broader range in the Colorado River Basin but dam construction and the introduction of non-native predator species led to local populations becoming extinct.