As we all know, fish is a good food. High-quality protein is abundant and fat is low. It also contains unsaturated fatty acids, vitamin D, selenium and other nutrients that many people are easy to lack. However, due to environmental and water pollution, the accumulation of heavy metals in fish is very worrying. Do you really want to say goodbye to fish head tofu pot and chopped pepper fish head? Fish, there is indeed pollution. First of all, there are pollutants in fish. Contaminants in the water are absorbed and enriched by plankton or plants and then eaten by fish at the bottom of the food chain. As the food chain passes, these pollutants accumulate step by step. Therefore, the Read More …