Preheat oven to 400�/ Saute onion in 2 Tablespoons butter until soft Add bread crumbs, celery, green pepper, almonds, eggs, parsley and tarragon and mix well. Stuff cavity of fish with mixture and sew shut. Melt 8 Tablespoons butter, line a large shallow baking dish with foil, and pour a little melted butter over the bottom. Place fish on the foil and sprinkle with salt and pepper. Bake for 1 hour and 15 minutes, basting frequently with remaining melted butter, or until fish flakes easily with a fork. Do not overcook