According to fish exporters in Sri Lanka, seafood can go bad from being exposed to bacteria or other microorganisms in the air. If you notice that your fish is starting to turn, toss it out. The best way to prevent spoilage of fish is by storing it properly at all times. Put your fish on ice or refrigerate them immediately when you get home from buying them so they stay cold while sitting in the fridge. So, how do you know if your seafood is spoiled?If your fish is turning brown or grey, then this means that it is starting to go bad.If you notice that the smell has changed from when you bought it. Fish should have a distinct saltwater smell in order to be considered fresh. Spoiled seafood can be very dangerous to your health, so don't make compromises, and take all precautions necessary to keep your seafood in good condition. It is always good to check where and how your fish come to the store because high quality seafood exporters in Sri Lanka ensure that the fish they export is fresh and of very good quality. The best is to cook it fresh when you receive it rather than keeping it for days (even under refrigeration). Fresh seafood tastes better and is far better for your health.