Shaguang fish, which mostly grows in the Yellow Sea, is also known as Tulang fish, Shaguan fish, ground arowana fish, Tianlang fish and Guangyu fish. The scientific name is "fine-tailed goby", which belongs to Perciformes, goby family and goby genus. It is an annual warm coastal bottom fish with strong adaptability to temperature and salinity. Its meat is tender, delicious and growing rapidly. It is distributed along the coast of China, especially Lianyungang. The goby is commonly known as "sand fish" in Lianyungang. Since ancient times, Lianyungang locals have the habit of eating sand fish, and Lianyungang folks have the saying "October sand mutton soup". There are detailed records in Haizhou Folklore, Cloud Glance, China's Famous Cookbook-Jiangsu Flavor, Haizhou Township Talk, Lianyungang Characteristic Culture, Jiangsu Aquatic Records, etc.