Cut fish into 4 portions; place in a shallow dish.
Combine pineapple juice, lime juice, Worcestershire sauce, salt and a dash of pepper; pour over fish and marinate in refrigerator for 1 hour, turning once.
Drain, reserving marinade.
Place fillets on a greased rack of broiler pan.
Broil 4 inches from heat for 10 minutes or until it flakes easily with a fork, brushing occasionally with the marinade.
Heat remaining marinade and spoon over fish before serving.
Garnish with lime twists