Score each side of the fish two or three times, from top to bottom, right down to the bone.
Mix together all the other ingredients and marinate the fish in it, refrigerate, for 30 to 60 minutes.
Preheat the oven to 450 ℉.
Roast the fish, undisturbed, in a lightly greased baking dish until diamond, 20 to 30 minutes, depending on the size.
Check for doneness (since you've scored the fish, you will be able to see clear to the bone and can easily tell if the fish is cooked through); cook an additional few minutes if necessary.
Serve with the pan juices.