Place fish in shallow glass dish; add lime juice and stir until fish is coated. Cover dish with plastic wrap; transfer to refrigerator. Chill until fish is opaque, about 1 hour.
Meanwhile, in medium bowl, stir together tomato sauce with remaining ingredients minus soda crackers until well combined. Add tomato mixture to dish with fish; gently stir until fish is well coated. Serve cold in small glasses or on soda crackers.