2. Look at the fish's eyes. Healthy fish's eyes are bright and black, while unhealthy fish's eyes are not clear enough and very turbid.
3. Look at the fish scales. Healthy fish scales are smooth and shiny, while dying fish scales are dull or even missing.
How to choose fish 1? Salted fish: The International Organization for Research and Analysis of Lung Cancer has classified China salted fish as a 1 carcinogen. Eat salted fish often, beware of laryngeal cancer looking for you, and eat less crispy fish and dried fish! It is suggested that this kind of pickled fish eat less or not, otherwise it is really risky.
2, especially cost-effective, big fish, leave a heart and say big first. If it is particularly cost-effective, mothers will undoubtedly be tempted and must pull. This kind of food is very likely to grow so big, and it is particularly cost-effective and looks very fast. Dominant fish is in the high-end food web, which belongs to the kind of "big fish eat small fish 3, small fish eat shrimp". The higher the level, the more heavy metals are deposited in the body, such as mercury, copper, lead and cadmium, which are likely to have many components.
3, it is the wild fish that everyone often says. Air pollution is the main consideration for eating wild fish. If the situation is unqualified, wild fish are more likely to gather some completely unexpected toxic substances. If fish eat harmful algae and shrimp, the body will be rich in endotoxin, such as ciguatoxin and tetrodotoxin.
People with work experience say that if the head of chopped pepper fish is too big, the fish eye lens is swollen and turbid, the spine is deformed, the fish scales are easy to fall off, the fillets are yellow and the tail ends turn green, so it is best not to buy this deformed fish.
In the case of buying fish, I smelled some gasoline, which may be the result of phenol environmental pollution. The key to the environmental pollution of phenol in water comes from the phenol-containing sewage discharged by metallurgical industry, liquefied gas, ironmaking and petrochemical equipment.
This kind of fish polluted by phenol environment, if people can't keep up with the detoxification ability after eating, will be chronically poisoned, mainly manifested as nausea, vomiting, diarrhea, headache, dizziness and mental anxiety. If you meet this kind of fish with "taste", you would rather not eat it or buy it!
5, the variety is the fish sold by the merchant. Some unknown vendors can't guarantee that fish come from fear. Although it will be cost-effective, there are also great hidden dangers in safety, health and safety, which may not be worth the loss. If you really want peace of mind, it is recommended to go to a professional shopping mall or a farmer's market to buy it.