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The National Park Service is again offering anglers cash bonuses anglers to catch brown trout in the Colorado River between Glen Canyon Dam and the Paria River. The program helps manage the increasing population of the invasive fish.
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The U.S. Bureau of Reclamation released a draft plan Wednesday responding to the invasion of nonnative, predatory fish in the Colorado River below Glen Canyon Dam.
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This year marks the 50th anniversary of the federal Endangered Species Act. The landmark conservation law lists more than 1,600 animals and plants as threatened or endangered. The U.S. Fish and Wildlife Service sets plans to recover those species and their habitats.
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A minnow that can reach six feet long and weigh eighty pounds—now that’s a fish story! But, this one happens to be true. The Colorado pikeminnow was known to reach such sizes.
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The National Park Service began electrofishing in the Colorado River this week to kill smallmouth bass between Glen Canyon Dam and Lees Ferry. KNAU’s Melissa Sevigny reports, it follows an unsuccessful attempt to control the exotic fish by poisoning a nearby slough.
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The Grand Canyon is a haven for native fish. But that’s now threatened by smallmouth bass, an exotic fish that eats native species and has recently escaped through Glen Canyon Dam. Scientists say a shock of cold water released through the dam might help keep their numbers down. KNAU’s Melissa Sevigny spoke with fish biologist Drew Eppehimer about the tradeoffs involved.
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Biologists have worked for decades to restore native Apache trout to their home waters in the White Mountains. Now, wildlife biologists say those efforts may finally be paying off.
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Humpback chub in the Grand Canyon have flourished under long-running restoration efforts. But now, exotic fish that prey on chub and other native fish have begun to slip through Glen Canyon Dam. It’s an unprecedented problem caused by the drought-stricken low levels of Lake Powell. KNAU’s Melissa Sevigny spoke with National Park Service fisheries biologist Melissa Trammell about her concerns.
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The U.S. Fish and Wildlife Service ruled that a Colorado River fish called the roundtail chub will not receive protection under the Endangered Species Act. KNAU’s Melissa Sevigny reports, its status as a species has been debated for years.
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The US Fish and Wildlife Service has downlisted a Colorado River fish from endangered to threatened. KNAU’s Melissa Sevigny reports, the agency says the…