Grilled Halibut and Fresh Mango Salsa

Combine 2 c plum tomatoes, seeded and diced, 1 1/2 c diced peeled ripe mango, 1/2 c diced onion, 1/2 c chopped fresh cilantro, 2 tbsp fresh lime juice, 1 tbsp cider vinegar, 1 tsp sugar.. Stir in 1/2 tsp salt, 1/2 tsp pepper, and 2 closed minced garlic. Rub halibut with olive oil; sprinkle with 1/2 tsp salt and 1/2 tsp pepper. Place fish on grill rack; grill 3 minutes on each side or until fish flakes easily when tested with a fork. Serve with mango salsa.