The National Park Service announced that are removing some invasive fish that are threatening another native fishing species from the Colorado River below the Glen Canyon Dam.
The agency said they are removing smallmouth bass and green sunfish, which are"threatening the recovery of humpback chub" who are protected under the Endangered Species Act.
"These non-native predatory fish were recently discovered breeding in areas where they have not previously been found in large numbers," the agency said."Because smallmouth bass are aggressive predators, failure to quickly control their population in the Colorado River above the Grand Canyon could likely lead to the demise of the humpback chub.
Park service officials said the area being treated will be closed to the public, but the river itself will not be closed.
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