Western Astrology: Astrological Compatibility Pisces: The twelfth and the last sign of the zodiac is Pisces the fish. It is a mutable water sign, and is the most ethereal and sensitive sign of all twelve. People born under this sign are compassionate, sentimental, and perceptive. Pisces is the most watery of the three water signs, giving people born under this sign empathy and selflessness. Pisces is ruled by Neptune, the planet of water and of mysticism. Those born under the sign of Pisces make for great psychologists and counselors due to their ability to understand others and their soft approach to emotional issues. more about Pisces Now please select your partner’s astrological sign: