Baked Redfish Yvonne
["1/2 c. cooking oil", "3/4 c. flour", "2 medium onions, chopped fine", "1/2 c. chopped celery", "1 bell pepper, chopped fine", "2 cloves garlic, chopped fine", "2 qt. stewed whole tomatoes, preferably homegrown or 2 cans tomato puree", "1 1/2 qt. fish stock", "3 bay leaves", "3 Tbsp. chopped green onion tops", "3 Tbsp. chopped parsley", "2 Tbsp. sugar or substitute sweetener", "salt and red pepper to taste", "1 (8 oz.) can whole mushrooms", "6 to 10 redfish fillets", "1 lemon, sliced thin", "cooked rice"]
["Stock:", "Boil fish heads, bones and seasoning in 2 quarts of water; reduce to 1 1/2 quarts."]
["cooking oil", "flour", "onions", "celery", "bell pepper", "garlic", "tomatoes", "fish stock", "bay leaves", "green onion", "parsley", "sugar", "salt", "mushrooms", "lemon", "rice"]