Planets in Pisces express their energies in a way which is nebulous, vague and impressionable.
People born with their Sun in Pisces are extremely sensitive people, who are easily hurt by the smallest amount of criticism. They are not argumentative: instead of fighting back, they will retreat into themselves and become upset.
They can be very negative, even depressive, and it is extremely important for them to have strong relationships to help them through the difficult times.
They are very spiritual, and are usually in tune with their inner nature. They are extremely good at empathising with others. Indeed, at times they can be too willing to see things from the other person's point of view - so they forget their own interests, and are influenced by the wrong people.