If Beihai original shredded fish has black lines, it is best not to eat it. The black line is the digestive tract of fish, and some harmful substances may remain in it, which is not good for human health. At the same time, the black line may also be the nerve tissue of fish, which contains high nitrite, and eating too much may cause harm to the body.

If you find black lines after eating the original North Sea shredded fish, it is recommended to stop eating in time and observe your physical condition. If you feel unwell, you should seek medical advice as soon as possible.

In order to avoid this situation, you should choose a regular brand and channel when buying shredded fish, and you can check the production date, shelf life and other information on the product packaging. Before eating, you should also carefully observe the surface and inside of the fish shreds, and handle or return them in time if there is any abnormality. At the same time, pay attention to the right amount when eating, and don't eat too much.