Is frozen fish that has thawed at room temp for 24 hours and still feels cold safe to eat?

No, it is not safe to eat frozen fish that has been thawed at room temperature for 24 hours and still feels cold.

According to the United States Department of Agriculture (USDA), frozen fish should be thawed in the refrigerator or under cold running water. It should never be thawed at room temperature, as this can allow bacteria to grow. Bacteria can multiply rapidly at room temperature, and even if the fish still feels cold, it may not be safe to eat.

To properly thaw frozen fish, place it in the refrigerator overnight or under cold running water for 30 minutes to an hour. If you are in a hurry, you can also thaw fish in the microwave on the defrost setting, but be sure to cook it immediately afterwards.

Once thawed, fish should be cooked immediately. Do not refreeze thawed fish unless it has been cooked first.