Why do I like Pisces when I am Aries?

The constellation is uncertain. Aries doesn't have to have the personality of Aries, or deliberately imitate the personality of Aries, and the personality of Pisces is not necessarily the personality of Pisces. The character of the constellation is the conclusion that people draw from general observation, so this is not absolute. You are Aries, but your personality is like Pisces, which means you are special. This should be a good thing, so don't be confused.