In a 2-qt. bowl, combine butter, onion, bell pepper, celery, and garlic; mix well. Saute onion mixture 4-5 minutes until tender. Add paprika, cajun seasoning, eggs, bread crumbs, and chopped crawfish tails. Mix well. If too dry, add a little water; if too moist, add more bread crumbs. Form into balls and roll in flour. Deep fry at 350 degrees until they float. Remove and place on paper towels to drain. Serve with or without a sauce of your liking.