Can also add chicken breasts (skinned, boned, cubed), shrimp, clams, oysters, etc. In deep kettle or Dutch oven, sauté bacon until lightly browned; remove bacon, set aside. In same kettle, sauté onions until tender.  Add fish, potatoes, celery seeds, carrots, green peppers, salt, pepper, chicken and/or any other seafood and boiling water. Simmer, covered, until vegetables are tender, about 25 minutes. Add tomatoes; heat. Garnish with parsley and crumbled bacon bits. Serves 6 main dishes.