Answer:
The 12 constellations of the classical Zodiac are: Aries the Ram, Taurus the Bull, Gemini the Twins, Cancer the Crab, Leo the Lion, Virgo the Maiden, Libra the Scales, Scorpio the Scorpion, Sagittarius the Archer, Capricorn the Sea-goat, Aquarius the Water-carrier, and Pisces the Fishes.
Modern astronomers have drawn boundaries for the constellations that mean that the apparent path of the sun (called the ecliptic, and what determines the signs of the Zodiac) also passes through the constellation of Ophiucius (also called Serpentarius, both mean Serpent holder).