Which has higher nutritional value and is safer, sea fish or river fish?

Fish is an indispensable delicacy on the dining table, with tender and smooth flesh and high nutritional value. But many people often struggle with the question: which is better, sea fish or river fish? Which one should we eat? Today we will talk about this topic.

1. Which has higher nutritional value, sea fish or river fish?

According to the different waters in which they grow, fish are divided into saltwater fish and freshwater fish (that is, sea fish and river fish). From the perspective of nutritional value, there is no obvious difference between the two; both contain 15%-22% high-quality protein and 1%-10% fat (mostly composed of unsaturated fatty acids); in addition, they also contain a certain amount of vitamin A, vitamin D, vitamin B, and minerals such as calcium, sodium, potassium, and magnesium.

As for what many friends say, “sea fish contain more DHA,” this is not actually the case. A study analyzed the DHA and EPA content in muscle and visceral fat of 5 kinds of sea fish sold on the market (herring, hairtail, yellow croaker, Spanish mackerel, and pomfret) and 9 kinds of river fish (sea bass, catfish, Chinese sturgeon, silver carp, tilapia, Wuchang bream, common carp, and grass carp). The comparison found that the DHA and EPA content in sea fish is not always higher than in river fish; among river fish, sea bass also has a very high DHA content. Therefore, whether the DHA content is high or low has nothing to do with whether the fish is a sea fish or a river fish. It is related to the species of fish.

Of course, if compared in detail, the nutrients contained in sea fish may be somewhat richer, especially in terms of minerals and unsaturated fatty acids.

2. Which is safer, sea fish or river fish?

Many people think that sea fish live in the sea. With blue seas and clear skies, they must certainly be cleaner than river fish and safer to eat. This is not absolute either. With the development of industry, many water bodies have become polluted, and seawater is no exception, especially in coastal waters where water quality is worrying. Of course, the probability of deep-sea areas being polluted is much lower, and the quality of deep-sea fish is also relatively much better.

Whether it is safe or not, the key still depends on whether the farming environment meets the requirements. As long as fish are not farmed in polluted water, captured fish are generally safe. At present, the food safety traceability system is popular internationally, allowing every fish, from birth and growth to capture and processing, all the way to the dining table, to be recorded, forming a complete supervision chain.

Whether it is sea fish or river fish, it actually all depends on your own personal taste preferences. Eat whatever you like. All right, then today's content ends here. Those who like it can follow Tuliu.com. See you next time.