I was just thinking if they have more uses and value that they will sell for more initially, but I am not an economist.
Only if the supply isn't enough.
But if restaurants can SELL their leftover scrap....................

Actually, you are probably correct.
The reason seafood is high cost is the relative cost to harvest it.
So now you put 2X, or 8X the barkets out there for the stuff and prices will go up.