How to identify yellow croaker;
1, test method for white vinegar
Yellow croaker is usually colored with a synthetic pigment-"Sunset Yellow", which contains aluminum, which is soluble in acid. Therefore, the dyed fish will lose color when wiped with white vinegar, but it will not lose color if the fish is natural.
So using white vinegar is a more effective method.
2. Check the fish mouth and gills.
Yellow croaker is named for its yellow color, which is more obvious in the abdomen, while the mouth and gills of healthy fish are almost white. So fish with abnormal mouth and cheeks are dyed fish. You can also open the fish's mouth. If it is dyed, yellow water may remain in the mouth.
3, yellow croaker will not be too yellow
Although the abdomen of yellow croaker is obviously yellow, the color is natural, not the fresher the yellower, and the color depth is only related to factors such as water temperature. If you observe fish scales in the sun, the uniform color on them must be dyed.