Cut a piece of foil big enough to make a packet out. Put fish on foil and sprinkle inside and outside of fish with all seasonings. (I have no idea how much, just sprinkle.) Add 3 -4 pats of butter, 1 on the inside of the fish and 2-3 on outside. Roll foil packets up and seal well.
Place on preheated grill (about 400 degrees) and cook on each side for 8-10.
Add a squeeze of fresh lemon to cooked fish.