Pre-heat oven on Med-high broil
1. Stir together yogurt, orange peel, and mint leaves. Season to taste with pepper.
2. Rinse fish, then pat dry.
3. Brush fish with oil and sprinkle with garlic and ginger.
4. Broil 3 to 4 inches from heat source for about 5 minutes or until fish flakes when tested with a fork.
5. Arrange lettuce on plate, top with fish, and drizzle yogurt sauce on top.