Peel and finely chop the onion. Clean and wash the zucchini and cut into fine strips. Wash the dill and chop coarsely. Heat 1 teaspoon of oil. Brown onion and rice in it. Deglaze with 250 ml water, season with salt and pepper.
Cook for about 20 minutes. After 10 minutes add zucchini and dill. Meanwhile cut the peppers in half, clean, wash and steam in salted water for about 5 minutes. Drain and fill with the rice mixture.
Add 1 teaspoon of crème fraîche to each. Shortly before serving, bake in a preheated oven (electric: 225 ° C/ gas: level 4) for about 8 minutes. Clean, wash and slice the mushrooms.
Fry in the remaining oil at high heat. Season with salt and pepper. Wash the fish fillets. Sprinkle with lemon juice, salt, roll up loosely and pin. Fry for about 5 minutes, turning carefully.
Deglaze with broth. Stir in the rest of the crème fraîche and simmer for another 3 minutes. Serve the pepper halves, fish rolls and mushroom sauce garnished with lime wedges and dill.