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This article has been reviewed according to Science X's editorial process and policies . Editors have highlighted the following attributes while ensuring the content's credibility: Add as preferred source They may be small, but invasive round goby can have a significant impact on local aquatic ecosystems. Credit: Don Campbell/University of Toronto For decades, the round goby has been one of the Great Lakes' most destructive invasive species. Scientists estimate its population numbers in the billions, making eradication unrealistic.

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