of Guizhou fish is in North America, and it is one of the most important freshwater aquaculture species, which is common in many countries. Later, this kind of fish was introduced to other countries, and now it is widely cultured in China. From the appearance, many fish have scales on their body surface, some of which are more obvious and some of which are less obvious. However, not all fish species have scales, and there are some species without scales. This is the case with Guizhou fish, which have no scales on their body surface.

If you touch the body of Guizhou fish with your hand, you will find that their body surface is very slippery, because they have no scales, but have a lot of mucus. Because Guizhou fish has no scales, it can be divided into scaleless fish from this aspect, and it is a typical scaleless fish. Fish scales have a very important protective role for fish, which can keep pathogens out of their bodies. Although Guizhou fish do not have scales, they have mucus, which can also block harmful substances and isolate bacteria from the outside of Guizhou fish.

2. Is Qianyu poisonous

? Among the fish, there are many edible ones. Qianyu is one of them, and it is a common food. Guizhou fish is not poisonous. Their meat is non-toxic and nutritious, so they can be safely eaten. At present, there is no evidence to prove that one of their organs or roe is poisonous. If you are worried, you can remove the viscera and roe when eating. However, although they are non-toxic, they belong to hair, so they should not be eaten excessively.