Clean the fish well and allow to drain. Using a small, sharp knife make a number of incisions (the size of button holes) along the back and the sides. Into each of these openings insert half a clove of garlic cut lengthways, some oregano, very little pepper and a drop of olive oil.
Once this has been done, score the sides of the fish, brush lightly with oil and lemon, sprinkle with more oregano, either plain or mixed with a little flour, and grill.
