The catfish, a large freshwater fish known for its whisker-like barbels and ability to thrive in various aquatic environments, is becoming more common in the Sarthe department in northwestern France. This increase in population has raised concerns among local authorities and environmental experts, prompting efforts to manage its impact on the ecosystem. In the town of Brûlon, officials have organized a fishing operation aimed at controlling the number of catfish in the local water body. The initiative is part of a broader strategy to maintain ecological balance and prevent potential disruptions to native fish species. By reducing the catfish population, authorities hope to protect the biodiversity of the area and ensure the health of the aquatic environment. Catfish are known to be adaptable and can sometimes outcompete native species for food and habitat. While they are not inherently harmful, their growing numbers can lead to imbalances in the ecosystem. The fishing operation in Brûlon is a proactive measure to address these concerns and ensure the sustainability of the local aquatic resources. Environmental experts are monitoring the situation closely to assess the effectiveness of the fishing efforts. They emphasize the importance of managing invasive or overpopulating species to preserve the natural habitat. This operation in Sarthe serves as a case study for other regions facing similar ecological challenges, highlighting the need for careful management of aquatic ecosystems.