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Podcast: γ¬γ’γΈγ§γθ±δΌθ©± Daily News Article Podcast
Episode: Chemical treatment deployed against invasive fish in Colorado River
Description: The National Park Service renewed its efforts to rid an area of the Colorado River in northern Arizona of invasive fish by killing them with a chemical treatment.
A substance lethal to fish but approved by federal environmental regulators called rotenone was disseminated last Aug. 26. Itβs the latest tactic in an ongoing struggle to keep non-native smallmouth bass and green sunfish at bay below the Glen Canyon Dam and to protect a threatened native fish, the humpback chub.
The treatment required a weekend closure of the Colorado River slough, a cobble bar area surrounding the backwater where the smallmouth ba...