Fish bubble is a sticky substance, rich in protein, vitamins, minerals and other nutrients. Therefore, fish bubbles have the functions of tonifying kidney deficiency, strengthening waist and knees, nourishing yin and replenishing essence, and beautifying face. For those who are physically weak, lack of true yin, mental overwork and excessive housing, it is the most suitable tonic.

In the Han Dynasty in China, medical books recorded the medicinal effects of "swim bladder"; In the Tang dynasty, it was regarded as one of the tributes, and the theory of traditional Chinese medicine believed that "fish bubble" had a nourishing effect; It is a good product for women's beauty, skin care and health care. Medical research has found that "fish bubble" contains a large number of vitamins and various trace elements, among which the content of vitamin A exceeds that of dried fish bubbles produced by other fish, which is very beneficial to beauty and calcium supplementation.

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The role of fish bubbles

The swim bladder, commonly known as fish bubble, contains air, which can make fish adjust their body density and float or sink in the water.

Most teleost fish that live in the upper and middle layers of seawater have swim bladders. The volume of swim bladder accounts for about 5% of the body. Its shapes are oval, conical, heart-shaped, horseshoe-shaped and so on. The gas filled in the swim bladder is mainly oxygen, ammonia and carbon dioxide, with the most oxygen content. Therefore, in an anoxic environment, the swim bladder can be used as an auxiliary respiratory organ to provide oxygen for fish.

The most important function of the swim bladder is to adjust the specific gravity of the fish by inflating and deflating, so as to adjust the water pressure balance inside and outside the bony fish and control the ups and downs of the body. In this way, when they swim, they only need a little strength to maintain a stable state in the water. The pressure of seawater increases with the increase of seawater depth, which is an obstacle for fish who want to visit the seabed.

Therefore, when fish want to go down to the deep water layer, some gas will be discharged from the swim bladder, which will increase the proportion of fish and make it easier to dive. On the other hand, if you want to rise to a higher water layer, you should fill some gas to make the swim bladder swell. At this point, the density of the fish is less than the surrounding water, and the fish floats to the surface. The swim bladder allows bony fish to roam freely in the ocean.

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