There is nothing wrong with frozen fish as long as there are no additives, and there is just the fish. In fact, it is one great alternative for those who are tight on the budget, because in the end of the day it is still fish, even though there might be some extra water. What's more, I am not as lucky as @stevesmi is, and there is just no place for fishing in my area, so I can only buy this fish, and it is perfectly fine.