The Asian swamp eel (Monopterus albus) is a freshwater fish native to Southeast Asia, but it has been introduced to other regions, including parts of the U.S. It has a long, snake-like body and lacks pectoral fins, allowing it to move easily through muddy waters and wetlands. This eel is highly adaptable and can live in a wide range of environments, including rice paddies, swamps, and even in low-oxygen conditions, as it can breathe air through its skin and mouth. The Asian swamp eel is nocturnal and carnivorous, feeding on small fish, invertebrates, and amphibians. Its adaptability and invasive tendencies in non-native regions have raised concerns about its impact on local ecosystems.