Boil potatoes in their skins. Clean. Eggs to boil. Clean. Cut cucumbers into small strips. Potatoes, cheese, eggs to grate on a coarse grater. Put layers: potatoes, cucumber, eggs, cheese, potatoes. each layer lightly grease with mayonnaise. The top layer of potatoes to cover one or two pieces cut from the red fish. Drip a couple of drops of mayonnaise, decorate with a spoon of caviar, a sprig of parsley. P. S. To save time, you can make this snack cake. In this case, I take the fish sliced in two colors: white and red. Spread the "AHMADOU". It turns out colorfully and white fish squares caviar looks stunningly beautiful:)