If fillets are large, cut into 6 serving pieces. Arrange fish in ungreased baking dish (12x7x2” or 8x8x2”). Sprinkle with lemon juice, 1-½ teaspoons salt and pepper. Mix margarine, ½ teaspoon salt, sage, thyme, bread cubes, carrots, celery and onion, Spread evenly over fish. Mix bread crumbs, parsley and paprika. Sprinkle over vegetables. Cover and bake in 350 degree oven until fish flakes easily with fork, about 35 minutes.