The constellation and sign of the zodiac known as "the fishes" is treated under Pisces.
Since the accession of the emperors of the Han dynasty, 206 B.C., the civil year of the Chinese has begun with the first day of that moon in the course of which the sun enters into the sign of the zodiac which corresponds with our sign Pisces.
The head was placed in the first sign of the zodiac - the Ram; and the feet in the last sign - the Fishes.
Gemini is the third sign of the zodiac symbolized by the ' Celestial Twins '.
In fact, they're the first sign of the zodiac and rule the skies every year between the dates of March 21st to April 19th.