Add the pasta to the boiling water and cook until firm but not overcooked, 8 to 10 minutes. Drain thoroughly.
Transfer the fish to a warm plate. Toss the pasta into the sauce to heat and coat evenly. Place the pasta on a serving plate and top with the sea bass. Sprinkle on parsley, drizzle with extra-virgin olive oil and add grated or shaved cheese. This is one fish dish that can stand up to added cheese.