1, which fish should not be eaten?
1, polluting fish.
Toxic fish include fish contaminated by phenol, heavy metals or pesticides, and fish with biotoxins in their bodies.
Fish and shrimp with strong kerosene smell are the result of phenol pollution.
Eating sharks, tuna, swordfish, mackerel, swordfish and other large marine fish is prone to mercury poisoning.
Especially pregnant women, lactating women and pregnant women should not eat these fish.
2. Deformed fish.
Don't eat other deformed fish, fish gall, dead turtles and eels.
3. Fish with parasites.
Clonorchis sinensis may also exist in fish. In the process of processing, besides thorough washing, we should also pay attention to thorough cooking.
4. Salted fish, smoked fish and dried fish.
Because it contains nitrosamine carcinogens, it is not advisable to eat too much. Fried fish, especially charred fish, contains strong carcinogen heterocyclic amines, so it is better to eat less.
2. How to choose fish
(1) Pick an eight-point fish.
Generally speaking, "eight times as big" fish is more suitable. The size of a fish determines its taste and safety. Too small fish may be immature, the meat is not fresh enough, and there will be more fishbones. Too big fish have rough meat and are easy to accumulate harmful substances in the body.
(2) Don't buy fish-eyed ones.
When buying fish, you must observe the color of fish eyes. If the fish eyes are not full and the cornea is wrinkled and turbid, it is not suitable to buy fish. In addition, if the fish gills are dark in color and are grayish red or grayish purple, they are not suitable for purchase.
(3) Don't buy a water tank with the wrong color.
When buying live fish, you must pay attention to the color of the water tank. If the color of the water tank is dark green or blue, it is probably because there are too many algae in the water tank or the water has not been changed for a long time. The fish in it is not fresh enough to buy.