Scaleless fish refers to fish that are born without scales. Common scaleless fish include catfish, eel, loach and eel.

Generally speaking, most scaleless fish live in the deep sea above 500 meters, and they are mainly fish species of the order Anguilla. Scaleless fish in the ocean include moray eels and moray eels; in fresh water, eels, catfish, river eels, etc. are scaleless fish. Many people think that marine fish such as chub and hairtail are scaleless fish. In fact, they are both scaled fish, but their scales are small and difficult to detect.

Scaleless fish contains higher cholesterol, so the elderly and obese people should eat as little as possible.

Traditional Chinese medicine has always believed that such foods are harmful and can easily cause the recurrence of old diseases. From clinical observation, it can indeed be seen that the patient's condition worsens or relapses after eating the above-mentioned foods.

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