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Pisces is an equatorial constellation, lying immediately south of Andromeda and north of Cetus. It appears highest in the evening sky in the months around September.

It is one of the faintest of the ancient constellations, containing no stars brighter than magnitude 3.6. Its brightest deep sky object is the galaxy M74 at magnitude 9.2.

Pisces is one of the twelve zodiacal constellations, and the Sun passes through it each year between mid-March and mid-April. This includes the moment when the Sun passes northward across the equator at the vernal equinox each March, defined to be the zero point of right ascension.

Pisces is traditionally represented by a pair of fish swimming on opposite directions with their tails connected by a cord. In Greek mythology, these fish are sometimes said to have rescued Aphrodite and her son Eros from the monster Typhon sent by Gaia.

This constellation is almost certainly of Babylonian rather than Greek origin, and the significance of the cord connecting the tails of the two fish has been lost to history.