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From Pet To Pest, Goldfish Tip Scales Of Survival In Lake's Ecosystem

NPR

Published April 8, 2015 at 2:20 PM PDT

Colorado wildlife officials believe someone released four or five pet goldfish into Teller Lake #5 a few years ago. Now, the fish number in the thousands and threaten the lake's ecosystem. Aquatic biologist Ben Swigle explains how they're trying to rid the lake of the invasive species.