Why should you not refreeze fish?
That’s because with either method, the fish fillets could have at least temporarily warmed up to a temperature higher than 40xb0F. At that point, harmful bacteria can begin to multiply and only further cooking will destroy it; simply refreezing the fish fillets won’t do the trick.
Can I refreeze previously frozen fish?
If you purchase previously frozen meat, poultry or fish at a retail store, you can refreeze if it has been handled properly.
What happens if you refreeze defrosted fish?
If raw or cooked food is thawed in the refrigerator, it is safe to refreeze it without cooking or heating, although there may be a loss of quality due to the moisture lost through thawing. After cooking raw foods that were previously frozen, it is safe to freeze the cooked foods.
Why should fish not be refrozen?
If instead the fish is unthawed too quickly, then the cell structure will change allowing moisture and flavor to escape from the fish. This improperly defrosted fish will be tougher and drier. So, if it is then refrozen and again defrosted, it will be lacking in moisture which will affect its structure and taste