invasive species

National Park Service officials are working to eliminate a spawning ground for harmful nonnative fish in Glen Canyon.

The U.S. Bureau of Reclamation has begun water releases from Glen Canyon Dam to cool the temperature of the Colorado River and slow the reproduction of an unwanted fish threatening native species.

The U.S. Bureau of Reclamation is taking public comment on a proposal to disrupt the spawning of a nonnative fish in the Grand Canyon by releasing spikes of cool water from Glen Canyon Dam. Many in the Colorado River community want more options.

Federal officials say they’re one step closer to finalizing a plan to remove invasive fish from the Colorado River below Glen Canyon Dam.

Grand Canyon National Park will get more than a quarter-million dollars to remove invasive species and protect native species of fish in the Colorado River.

This weekend federal officials will begin another round of chemical treatments in the Colorado River meant to remove invasive fish. But environmentalists want more to be done to protect native species.

The National Park Service will renew efforts to rid an area of the Colorado River of invasive fish by killing them with a chemical treatment.

Arizona wildlife officials say they’ve confirmed invasive New Zealand mudsnails in an eastern Arizona creek.

Stinknet is true to its name: it’s a plant with an overwhelming and off-putting turpentine odor. Also known as Globe Chamomile, it has bright yellow flowers the shape of golf balls and carrot-like dark green leaves. It’s native to South Africa.

Environmental groups are calling on federal officials to prevent populations of non-native smallmouth bass from establishing below Glen Canyon Dam on the Colorado River.