Wash the gutted trout, season the inside and outside with salt and pepper and drizzle with lemon juice. Slice the oranges and halve them and place them in the trout`s abdominal cavity. Turn the fish in flour and fry them brown on both sides in hot butter.
At the same time, roast the flaked almonds in butter in another pan and deglaze with orange juice. Season with salt and pepper and refine with crème fraîche. Possibly thicken the sauce with flour butter.
Arrange the trout on a platter, pour the sauce over it and sprinkle with finely chopped parsley.