The article discusses the alarming presence of the invasive species, the crocodile gar (鳄雀鳝), in Chinese freshwater lakes like Cloud Lake in Pingdingshan. The creature"s aggressive nature and indiscriminate feeding habits pose a significant threat to native fish populations, ecosystem, and human safety. Efforts to control and manage this invasive species include draining lakes, using诱捕 methods, and addressing the issue at its source to preserve biodiversity.