Soak the saffron threads in a little warm water. Cook the garganelli in plenty of salted water.
Cut the asparagus into small pieces and sauté in a frying pan with oil, add the fish, also in small pieces, salt and pepper.
When everything is starting to brown, add the white wine and allow to evaporate. When the pasta is cooked, add it to the sauce, add the saffron and its soaking water and toss everything together to mix.
Garnish to taste and serve.