Are catfish and crayfish still edible? A nutritionist tells you what to do

Summer is here, and it's time for people to eat fish and crayfish. But in recent years, there have been many rumors about them. In addition to some people saying that crayfish is dirty and uneatable, they also say that catfish is the dirtiest fish in the world. If the two are compared, they are comparable.

Are crawfish really dirty?

If we want to talk about the original crayfish, they often live in stinky ditch. We cannot guarantee that the crayfish is safe. It is likely to eat bacteria, or there may be parasites on the body.

Most of the current crayfish are cultivated artificially. First of all, the breeding environment is guaranteed. Even if there are parasites on the crayfish, as long as we cook it maturely, we do not eat crayfish heads that accumulate more toxins. It is safe to eat.

Is that catfish the dirtiest fish in the world?

Many people see catfish growing in dirty places. But now the environment where catfish live is mostly clean water sources, and the food they eat is mostly fresh ingredients. Changes in the environment have made catfish grow faster and are not easy to die.

As for what the catfish eat, you don't have to worry. The catfish's habit is to forage at night. Although they can survive in the sludge, the food they eat is also small fish, such as loach, crucian carp, small shrimp, etc. Wait.

Conversely, if the catfish grows in a very dirty environment, it will also affect the growth rate of the catfish and even accelerate the death of the catfish. This is not good for businessmen. Even if the catfish can sell for a good price, the merchants will not put the catfish in an unclean place to raise.

Therefore, you can eat it with confidence. If you are still worried, when buying catfish, check whether there is mucus on the surface of the catfish. The catfish with mucus indicates that the catfish is relatively healthy. At the same time, you can also observe the color of the mucus. The catfish mucus without problems is usually similar to a transparent liquid.

Such catfish has a high safety and nutritional value. Each hectogram of fresh catfish contains 17.3g of protein, 0.54mg of vitamin E, 27.49mg of selenium, 351mg of potassium, 195mg of phosphorus and other ingredients.

In particular, the selenium element in catfish is much higher than the general food content. This nutrient is called "anti-cancer substance". In related studies, it has been found that people consume a moderate amount of selenium element every day, which can strengthen the body. Physique, enhance the ability to resist cancer.

In addition, the content of unsaturated fatty acids in catfish is not low. Among them, DHA and EPA, which are called "brain gold", have very important effects on the brain and blood vessels. You might as well eat some catfish in moderation within a week, and you will be healthy.