Combine rice, carrots, parsley & 1 Tbls. Melted butter; divide into 6 parts & spread on each fillet. Roll up fillet & fasten with toothpicks, brush with 2 Tbls. Butter. Bake in 350 oven for 20-25 minutes. Stir remaining butter into flour; gradually stir in lemon juice, orange juice & bitters. Cook mixture over low heat, stirring constantly, until thick & bubbly. Spoon sauce over cooked fish rolls.