Bring rice to the boil with 400 ml salted water, cover and cook over a low heat for about 20 minutes. Meanwhile rinse fish fillet, dab dry and cut into cubes. Season fish with salt, pepper and lemon peel. Drain and dice the gherkins. Wash and halve the cherry tomatoes.
Wash dill and chop finely. Heat oil in a pan and fry fish until golden brown all around. Take out. Add cherry tomatoes and gherkins and fry. Deglaze with broth. Add crème fraîche and stir until smooth. Bring the sauce to the boil and boil down for about 5 minutes. Reduce heat, add fish and warm up at low heat. Season sauce with salt and pepper and add dill. Drain any rice water that may still be present.
Add crème fraîche and stir until smooth. Bring the sauce to the boil and boil down for about 5 minutes. Reduce heat, add fish and warm up at low heat. Season sauce with salt and pepper and add dill. Drain any rice water that may still be present. Arrange fish and rice on plates. Garnish with lemon zest and dill