Fresh fish bellies need to be cleaned before storage. The more careful you are, the more complete it will be. Wash the internal organs and bloodshot blood after taking it out. There is a dirty film on the inner and outer surface of the fish belly, which must be torn off, but be careful not to hurt the swim bladder. Then dry in the sun. If you want the dried fish belly to be stored for a long time without mildew and deterioration, you must dry it in the sun. When it dries outside, it will rot inside. Dried fish belly is fish glue. In fact, if you want to eat fish glue, you can find a company called Dazhong Food Supplement on the Internet, such as Taobao. This fish glue is made by fishermen themselves, which is very cost-effective. Buying fish glue from them can save a lot of money.