2. First make sure that the smell of this fish is not the original taste. Some fish are characterized by their smell. For example, skunk fish is a kind of flavor.
3. Smell the fish when it thaws. If the smell is not obvious, it may be fishy, not rotten fish. Cook it as soon as possible.
4. Observe the body surface and internal organs of fish. There will be some signs of decay on the surface of the broken fish. If it is confirmed that the fish has rotted and expired, throw it away immediately. After eating expired seafood, I have mild diarrhea. In severe cases, I may need to be hospitalized for gastric lavage. There is no need to hurt my body for a fish.