Fresh water lake, which Cambodia has caused the Mekong River, the largest in Asia, the name "stone Lake Lake" (Tonle Sap) is a long river that flows through 500 kilometers from flowing into Viet Nam into the South China Sea is an international river and believed that the Mekong giant catfish, which is a fresh water fish that swim in the world contrary to the water from the Lake to Lake country stone Thailand-Laos. Prior to breeding, etc. of the Mekong River.