Fish belly is one of the four major seafood products, which is made by cutting and drying the swim bladder of fish. Fish maw has high nutritional value and is rich in protein and fat. The main nutrients are viscous colloid, high-grade protein and polysaccharide. According to the determination, every100g of dried fish belly contains 84.4g of protein, 0.2g of fat, 50mg of calcium, 29mg of phosphorus and 2.6mg of iron.
Generally speaking, the varieties are silver flounder glue, spider fish glue, white flounder glue, red-billed flounder glue, North Sea fish glue, Annan fish glue, horizontal straight fish glue, yellow croaker glue, bean fish glue, arowana fish glue and so on. The bigger the same kind of gelatin, the better the taste, which is one of the most important factors to determine the quality of gelatin. Generally, prices are measured by market specifications. The bigger the gelatin, the more expensive it is. Of course, this is only the most basic measure. In fact, the measure of gelatin price is not just size. But if the fish glue is bigger, it will definitely be more expensive.