Preheat oven 180c.

Place the fish in a single layer on an oven tray or dish. Drizzle with olive oil, season with salt and pepper, sprinkle with oregano. Squeeze half a lemon and bake for 25 minutes or until completely cooked through

Dice the tomato and olives. Place in a bowl. Add chopped basil and season well with salt and pepper. Add a dash of olive oil and white vinegar.

Place the cooked fish on a large white platter. Arrange the salsa on top of the fish. Drizzle a little more olive oil and serve with lemon wedges.