My mother’s herring on rye

My mother invented this dish. It can be served as a cold main dish or as an entrée using small portions.Herring on rye:Slices of sweet, dark rye or pumpernickel breadMarinated herring (about one fillet for each slice of bread)Thin slices of sweet apple (about one medium Red Delicious for each 6 slices of bread)Sliced banana (about one medium banana for 2 slices of bread)Sliced hard-boiled egg (