Can you cook cod or tilapia after its been in the refrigerator for 5 days?

It's generally not safe to cook and eat cod or tilapia after it has been in the refrigerator for 5 days. Fish should ideally be consumed within 1 to 2 days of refrigeration to ensure freshness and minimize the risk of foodborne illness. If the fish has a sour smell, slimy texture, or any discoloration, it's best to discard it. Always prioritize food safety when it comes to seafood.