MIX juice, oil, rum, dressing mix and ginger in small bowl until well blended. Pour over combined fish, red peppers, pineapple and onions in shallow dish; cover. Refrigerate 30 min. to 1 hour to marinate. Drain fish mixture; discard marinade.
PREHEAT greased grill to medium-high heat. Thread fish, vegetables and pineapple alternately on skewers.
PLACE kabobs on grill. Cook 4 to 6 min. on each side or until fish flakes easily with fork. Serve over hot rice.