Prepare Tropical Salsa.
Combine sugar and next 9 ingredients in a small bowl. Sprinkle spice mixture evenly over both sides of fish. Cover and marinate 30 minutes.
Place fish on grill rack coated with cooking spray; grill 9 minutes on each side or until fish flakes easily when tested with a fork. Remove fish from grill; break into bite-sized pieces.
Heat tortillas according to package directions. Divide fish evenly among tortillas. Spoon about 3 tablespoons Tropical Salsa over fish on each tortilla.