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logo 11/28/2024 2:39:32 AM     
Biologists' Fears Confirmed on the Lower Colorado River 
US Source: Associated Press 7/6/2022
Biologists' Fears Confirmed on the Lower Colorado River
Credit: Jeff Arnold/National Park Service via AP
Confirming their worst fears for record-low lake levels, National Park Service fisheries biologists have discovered that a non-native predator fish has made its way through Glen Canyon Dam to the lower Colorado River, where it can prey on ancient native fish they have been working to reestablish.
 

For National Park Service fisheries biologist Jeff Arnold, it was a moment he'd been dreading. Bare-legged in sandals, he was pulling in a net in a shallow backwater of the lower Colorado River last week, when he spotted three young fish that didn't belong there. “Give me a call when you get this!” he messaged a colleague, snapping photos.

Minutes later, the park service confirmed their worst fear: smallmouth bass had in fact been found and were likely reproducing in the Colorado River below Glen Canyon Dam.

 
Colorado River Bass, Smallmouth Continue...

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