Can you pressure cook whole fish and get soft bones without overcooking fish? I want to cook whole fish in a soup and get the bones soft.  According to some answers pressure cooking will soften bones.  however by the time this has happened won't the fish meat be overcooked/tear off the bones?

How long should it be in a pressure cooker for and at what setting?
Here is the answer to a related question: How to cook a fish to make it's bones soft

Basically, the pressure cooking doesn't allow any moisture to escape the system so the fish will retain the moisture and not dry out. It will still reach a hot temperature inside the can, which may result in a slightly different texture than if you were to sous vide, for example. But the pressure cooking should soften the bones and be the solution you are looking for.