1. The fish species used for bean paste belong to the genus Cynocephalus in the family Lithocephalidae. The fish species can be as small as ten centimeters long, and even large ones can be as long as forty centimeters. It is a small fish species, so the bean kernel fish maw can be called a pocket-sized fish maw.

2. The origins of soybean isinglass are (India, Pakistan, Myanmar, Vietnam). It is saltwater isinglass, with a large annual output and a price that is affordable to the public.

3. The glue tail has a long and slender whisker. Usually because of the small production of isinglass and the large amount of isinglass piled together, the small whisker at the tail will most likely be worn away.

4. Soybean kernel gum is made from wild isinglass, and most of it comes from male belly. Some people on the Internet call it red guar gum, and its species are similar to red guar gum. The mouth types are almost the same, so some people call it red mouth and red mouth, or red melon and red mouth. In fact, these names are all called by merchants, just for harvesting leeks. Generally, knowledgeable people only recognize red-billed fish as red-billed fish maw.

5. People who have tried it say it is more refreshing and elastic, and feels sticky but slippery. It is becoming more and more popular in many places. The longer the bean paste is simmered, the less likely it will melt and the fishy smell will be minimal.