Clean and wash the fennel bulb and remove the stalk. Slice the fennel very thinly. Fillet the oranges.
Arrange the salmon on 4 large plates. Mix salt, pepper, a little lemon juice, white balsamic vinegar and olive oil into a vinaigrette. 2 tablespoons Spread it on the salmon, mix the rest with the fennel and let it steep for a moment.
Fold in the orange fillets. 2 tablespoons each. Put the salad in the middle of the plate and serve immediately.