From the perspective of dream interpretation and Yijing: don't care too much. Have you ever heard that "people who are good at easy things don't predict"? People who know the Book of Changes can't do divination. Good or bad will affect your mood, change the result and let nature take its course.
From the perspective of modern science, it may be that you like to eat fish, and you have an impression in your brain and you are excited, so you don't have to care about dreaming.
It doesn't matter anyway, it doesn't matter.