Round fish grill well but white fish fillets dry out easily.
Crisp the skin first by grilling briefly under a fierce heat, then reduce the heat to medium and grill more slowly until cooked.
Cooking time depends on the thickness of the fish. Allow 6 minutes each side for a small fish and up to ten minutes each side for a larger fish.
It is easy to overcook grilled fish, so watch the fish cooking and remove from the grill as soon as the thickest flesh comes away from the bone.