In 2006, the Grand Canyon National Park began a significant effort to reduce the population of non-native brown trout in Bright Angel Creek, Arizona. Historically, Bright Angel Creek had been a vital habitat for native fish, including the endangered humpback chub, but the introduction of brown trout created an imbalance threatening the ecosystem. The Bright Angel Creek Trout Reduction Project aimed to eliminate these invasive species and allow native fish to recover. The project proved remarkably successful, resulting in a more than 400% increase in native fish populations within Bright Angel Creek. This restoration project highlights the importance of managing invasive species to protect vulnerable ecosystems within the Grand Canyon. The increase in native fish represents a substantial win for conservation efforts in the region.