Make the salsa: In a medium-size bowl, combine oranges, pineapple chunks, mango, minced jalapenos, 3 tablespoons orange juice, diced red bell pepper, sugar, and cilantro. Mix well, and refrigerate covered.
In a non-reactive bowl, mix 1/2 cup orange juice, olive oil, cayenne pepper, and pineapple juice concentrate. Place swordfish steaks in bowl, and turn to coat well. Marinate the swordfish in the mixture for 30 minutes.
Prepare an outside grill with oiled rack set 6 inches from the heat source. On a gas grill, set the heat to medium-high.
Grill the swordfish on each side for a total time of about 12 to 15 minutes, until opaque in the center. Serve the grilled fish with the salsa.
