MONTROSE, Colo. — Anglers who participated in the 2019 smallmouth bass tournament at Ridgway State Park, again, helped Colorado Parks and Wildlife on its mission to preserve native fish species.

For the fifth year in a row, licensed anglers caught hundreds of smallmouth bass that are a threat to Colorado’s native fish that live downstream in the Gunnison and Colorado rivers. A total of 79 registered anglers removed 1,498 smallmouth bass in the month-long tournament that ended July 27. Smallmouth bass are non-native and were introduced illegally to Ridgway Reservoir about 10 years ago. They are predators and could wipe out populations of native fish downstream.

“In the five years of the tournament we have reduced the population of smallmouth bass in the reservoir by 79 percent,” said Eric Gardunio, aquatic biologist for CPW in Montrose and the organizer of the tournament. “It is truly amazing what these anglers can do. They are participating directly in wildlife management in Colorado.”

Before the first tournament in 2015, Gardunio estimated there were 3,632 adult smallmouth bass in the reservoir. Adult fish measure six inches in length or more. Now it is estimated that only 763 adult fish live in the reservoir.

“We are making substantial headway in suppressing the population of smallmouth that were introduced illegally to Ridgway Reservoir,” Gardunio said.

The Ridgway tournament targets smallmouth bass because they could escape from the reservoir and migrate downstream to a section of the Gunnison River that is considered “critical habitat” for native fish.

“The work by CPW staff along with the help of anglers shows that through targeted management techniques we can enhance survival of rare aquatic species,” said John Alves, senior aquatic biologist for the Southwest Region for Colorado Parks and Wildlife.

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