Pisces. Pisces is the twelfth and final astrological sign in the zodiac. It is a negative, mutable sign. It spans 330° to 360° of celestial longitude. Under the tropical zodiac, the sun transits this area between February 19 and March 20. In classical interpretations, the symbol of the fish is derived from the ichthyocentaurs, who aided Aphrodite when she was born from the sea. According to some tropical astrologers, the current astrological age is the Age of Pisces, while others maintain that currently it is the Age of Aquarius. See also: History of astrology A cord joins the tails of Pisces, the two fishes, from Atlas Coelestis. While the astrological sign Pisces per definition runs from ecliptic longitude 330° to 0°, this position is now mostly covered by the constellation of Aquarius due to the precession from when the constellation and the sign coincided. Today, the First Point of Aries, or the vernal equinox, is in the Pisces constellation. There are no prominent stars in the constellation, with the brightest stars being of only fourth magnitude. The constellation, however, is different from the astronomical location where the sign occupies space. The constellations in earlier times were primarily used as markers to help determine what influence was in the sky. Nevertheless, the sign of Pisces remains in the 30-degree span of 330°-0°. Ptolemy described Alpha Piscium as the point where the cords joining the two fish are knotted together. The astrological symbol shows the two fishes captured by a string, typically by the mouth or the tails. The fish are usually portrayed swimming in opposite directions; this represents the duality within the Piscean nature. They are ruled by the planet Jupiter. Although they appear as a pair, the name of the sign in all languages originally referred to only one fish with the exception of Greek, Romanian, Bulgarian, Russian, Dutch, Hungarian, Latvian, Lithuanian and Italian. Pisces is the mutable water sign of the zodiac. Divine associations with Pisces include Poseidon / Neptune, Aphrodite, Eros, Typhon, Vishnu and the Sumerian goddess Inanna. Pisces is the Latin word for fishes. It is one of the earliest zodiac signs on record, with the two fish appearing as far back as c. 2300 BC on an Egyptian coffin lid. According to one Greek myth, Pisces represents the fish, sometimes represented by a shark, into which Aphrodite and her son Eros transformed in order to escape the monster Typhon. Typhon, the father of all monsters, had been sent by Gaia to attack the gods, which led Pan to warn the others before himself changing into a goat-fish and jumping into the Euphrates. A similar myth, one in which the fish Pisces carries Aphrodite and her son out of danger, is resounded in Manilius' five-volume poetic work Astronomica: Venus ow'd her safety to their Shape. Another myth is that an egg fell into the Euphrates River. It was then rolled to the shore by fish. Doves sat on the egg until it hatched, out from which came Aphrodite. As a sign of gratitude towards the fish, Aphrodite put the fish into the night sky. Because of these myths, the Pisces constellation was also known as Venus et Cupido, Venus Syria cum Cupidine, Venus cum Adone, Dione and Veneris Mater, the latter being the formal Latin term for mother. The Greek myth on the origin of the sign of Pisces has been cited by English astrologer Richard James Morrison as an example of the fables that arose from the original astrological doctrine, and that the original intent of was afterwards corrupted both by poets and priests. Purim, a Jewish holiday, falls at the full moon preceding the Passover, which was set by the full moon in Aries, which follows Pisces. The story of the birth of Christ is said to be a result of the spring equinox entering into the Pisces, as the Savior of the World appeared as the Fisher of Men. This parallels the entering into the Age of Pisces. Early Christian inscription ichthys carved with Greek letters into marble in the ancient Greek ruins of Ephesus, Turkey. See also: Astrological age An astrological age is a time period in astrology that parallels major changes in the development of Earth's inhabitants, particularly relating to culture, society and politics, and there are twelve astrological ages corresponding to the twelve zodiacal signs. Astrological ages occur because of a phenomenon known as the precession of the equinoxes, and one complete period of this precession is called a Great Year or Platonic Year of about 25,920 years. The age of Pisces began c. AD 1 and will end c. AD 2150.