Sprinkle mahi mahi with garlic powder and pepper. In a large skillet, cook mahi mahi in oil over medium-high heat for 4-5 minutes on each side or until fish flakes easily with a fork. Remove and keep warm.
In the same skillet, saute ginger for 30 seconds. Stir in teriyaki sauce; heat through. Serve over mahi mahi. Yield: 4 servings.