The grass carp is a large freshwater fish native to East Asia, particularly in rivers and lakes. It is known for its ability to consume vast amounts of aquatic vegetation, making it an effective tool for controlling plant growth in water bodies. Grass carp can grow up to 4 feet long and weigh over 100 pounds. Introduced to various countries, including the United States, for aquatic weed management, grass carp can impact local ecosystems. They primarily feed on grasses and other submerged plants, which can alter habitats for native fish and wildlife. Proper management is essential to prevent ecological imbalances.