question reguarding weighing protein

I know this sounds stupid, but my memory is really bad with this surgery (dr said it will get better) I need to know if you should weigh your fish and seafood raw or cooked, Ive been weighing it cooked, and pork beef, chicken I weigh after it is cooked as well. But something is telling me today that I am wrong and should weigh seafoods raw

I weigh everything cooked.

Laurie