Wash the fish, pat dry and cut into 8 pieces. Place in an ovenproof dish. Crumble toast finely in the universal chopper, mix with pesto, season with a little pepper. Spread the pesto crumbs on the fish. Bake in the preheated oven (electric cooker: 200 °C/ convection oven: 175 °C/ gas: level 3) for 12-15 minutes.
Cook pasta in boiling salted water according to package instructions. Peel and finely dice onion. Melt the lobster paste in a pot. Sauté onion in it. Add cream, wine and tomatoes. Bring to the boil, simmer for 2-3 minutes. Wash, clean and quarter the tomato, remove seeds and cut the flesh into small cubes. Season sauce with salt and pepper. Drain the pasta and let it drain.
Bring to the boil, simmer for 2-3 minutes. Wash, clean and quarter the tomato, remove seeds and cut the flesh into small cubes. Season sauce with salt and pepper. Drain the pasta and let it drain. Serve the pasta with the sauce and the fish. Sprinkle with tomato cubes and serve immediately