Pisces
Pisces is the zodiac sign for people born between February 19 and March 20. Element: water; modality: mutable; ruling planets: Neptune and Jupiter. The cusp dates shift by a day from year to year, so if you were born near a cusp, check your sign with the calculator.
Personality
Pisces is the sign of compassion and dissolving boundaries. Pisceans feel other people's states almost as their own, forgive easily and aren't inclined to judge.
Strengths: empathy, imagination, gentleness, the ability to accept people as they are.
Weaknesses: blurred boundaries and escaping reality. Pisceans agree out loud while disagreeing inside, idealize people and take it hard when the ideal doesn't hold up.
The Gemini man and woman
The Pisces man is sensitive, creative and conflict-averse; he needs support more than he admits.
The Pisces woman is gentle and responsive; she easily sacrifices her own interests and later resents it.
Career and money
Creative and helping work suits them: art, music, medicine, psychology, charity, anything that calls for sensitivity and imagination.
Money is a weak spot: Pisceans are bad at budgeting and lend money easily. It helps them to have someone who manages the budget together with them.
Compatibility
Traditionally, the easiest matches are signs of the same element and of compatible elements; for Pisces these are Taurus, Cancer, Scorpio and Capricorn.
The most challenging are signs in square and in adjacent positions: Aries, Gemini, Sagittarius and Aquarius. The opposite sign is Virgo: strong attraction and an equally strong struggle.
These are general rules of aspects, not a verdict. Each pair is covered separately in zodiac compatibility.
The sign in the birth chart
Your Sun sign is just the position of the Sun at the moment of birth. A full birth chart also includes the sign of the Moon (emotions), the Ascendant (first impression) and the positions of the other planets.
That's why a person may "not seem like an Aries": they have an Aries Sun, a Cancer Moon and a Libra Ascendant, and what comes across is nothing like a Martian manner. Horoscopes in the media work only with the Sun sign, hence the feeling that they aren't about you.