Fish maw is not seafood. It is an item made from the swim bladder of large fish as the main raw material. It can be understood as a processed seafood product.

Isinglass is usually derived from totoaba. The nutritional value of isinglass has not yet been scientifically determined. It is known that the demand for isinglass has caused many species such as yellowlip and totoaba to become endangered.

As one of the eight delicacies of seafood, isinglass is expensive. High-quality fish maws on the market can cost tens of thousands or even hundreds of thousands of yuan per 500 grams, while ordinary ones cost several hundred yuan. Relatively speaking, the economic and therapeutic value of isinglass extracted from wild fish species is greater.

Selection skills

First, check whether it is a complete piece of isinglass, rather than several small pieces of isinglass.

Second, it can be identified by whether the isinglass has texture and whether the texture is messy; if there is no texture or the texture is messy, it means that the isinglass may not be a complete piece.

Third, soak the entire isinglass in water and observe whether it falls apart to identify its integrity.

Fourthly, you can also observe whether it has a head and a tail. Isinglass has a big head and a small tail, and the overall shape is an oval.

Fifth, after confirming that the isinglass is complete, it is necessary to look at the size and thickness of the isinglass, because only big fish have large isinglass, and large isinglass has higher nutritional value. The simplest method To identify it, that is to weigh it. The weight of the isinglass can best reflect whether the isinglass is obtained from a big fish.