Preheat grill to medium-high heat. Spray grill basket with nonstick nonflammable cooking spray. Sprinkle fillets evenly with 1/2 teaspoon salt and 1/2 teaspoon pepper. Grill fish in grill basket for 2 minutes on each side or until fish flakes easily when tested with a fork.
In a small bowl, combine oil, remaining 1/4 teaspoon salt, remaining 1/4 teaspoon pepper, vinegar, cilantro, lime zest, lemon zest, and orange zest. Drizzle vinaigrette over fish. Serve.