Fish is cleaned of skin and bones, cut it sliced, salted, ranks in the pan, pour in some of the fat and bake in the oven. Separately, make sauce by browning onions, some tomatoes and flour, dilute with fish broth, add pre-steamed parsley, red tomatoes and black pepper. As a boil 10 minutes thicken with mixed yogurt, cream and egg yolks. Pour the sauce over the fish and bake 5-10 minutes.