11 out of 30 fish samples in Chennai were tested positive Formalin
- Formaldehyde is either sprayed or injected or the fish is immersed in the solution
- In Kerala, the problem was there initially
- Generally a fish is tested whether it is fresh or not by checking the gills, if the gills are red, the fish is considered as fresh.
- Formaldehyde keeps that red color. Some fishermen use Kumkum to keep that red.
