Fish maw tubes originate abroad and are distributed in South America, Southeast Asia, and Africa. The fish maw produced in South America and Southeast Asia is of relatively average quality, while Africa is an important producing area for yellow fish maw. Bass is mainly cultivated there, and the famous yellow fish maw is now introduced into China, in Guangdong. Fish maw is produced in Chaoshan, Guangzhou, Shenzhen and other places. The quality is extremely high and is sold at home and abroad.