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The U.S. Fish and Wildlife Service proposed today to downgrade a Colorado River fish, the razorback sucker, from “endangered” to “threatened.” KNAU’s…
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Here’s a fish story for you: what if you could get paid to go fishing all day? The National Park Service wants anglers to help get rid of exotic brown…
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Endangered fish in the Colorado River face multiple threats. Their survival is linked to the river’s temperature, which is altered both by climate change…
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Lees Ferry on the Colorado River below Glen Canyon Dam is a world-famous rainbow trout fishery. But in recent years a different nonnative fish, the brown…
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State officials are warning about elevated mercury levels in a species of fish at a Williams-area lake.The Arizona Department of Environmental Quality…
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Forensic scientists (at least on TV shows) collect DNA to figure out who was at the scene of a crime. What if you could use the same technique to discover…
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Low, steady releases of water from Glen Canyon Dam are taking place this spring and summer as an experiment to increase aquatic insects on the Colorado…
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The Tonto National Forest has grown by 150 acres, thanks to the purchase of former ranchland near Payson along the East Verde River. KNAU’s Melissa…
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A new scientific report says the razorback sucker is on its way to recovery. The report recommends “downlisting” the Colorado River fish from endangered…
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A new study says endangered razorback suckers upstream of Lake Powell may struggle to migrate up the San Juan River to spawn. The fish are blocked by a…