the fishes · pronounced PIE-seez. Pisces is an official IAU constellation representing the fishes. It occupies the ecliptic southeast of the Great Square, where its outline is best understood as a guide to a formally bounded region rather than a physical group of nearby stars. Alpherg and Gamma Piscium provide practical anchors, while M74 gives observers a destination beyond the line figure. The stars only appear together from Earth: they lie at very different distances and move independently through the Galaxy. Its classical identity has survived repeated reinterpretation, but the modern boundary is an astronomical convention, not the outline used by every historical culture. Naked-eye recognition depends on latitude, season, darkness and moonlight. This guide therefore separates the official sky area, the traditional picture and the objects that can actually be observed.
About Pisces
Pisces is one of the 88 constellations recognized by the International Astronomical Union. Its standard three-letter abbreviation is Psc, and astronomers use the genitive form Piscium when naming stars associated with it. The constellation's reference position lies around right ascension 1.3 hours and declination +15 degrees.
Its location places it in the celestial equator. For a typical mid-latitude observer, this part of the celestial sphere is especially well placed during autumn evenings. Exact visibility depends on latitude, local horizon, date and time.
History and mythology of Pisces
Origin and naming
Pisces entered the Western constellation record through Ptolemy,2nd century. Its name means the fishes; historical artwork varies and should not be confused with the IAU boundary adopted for positional astronomy.
From figure to official sky region
The IAU standardised constellation names in 1922, and Eugène Delporte published the modern boundaries in 1930. Every coordinate inside that polygon belongs to this constellation, including stars and galaxies unrelated to its traditional stick figure.
Cultural context
The familiar Western figure is one layer of sky history. Star traditions from other cultures may divide the ecliptic southeast of the Great Square into smaller asterisms, lunar stations or navigational patterns, so apparent overlap is cross-referenced rather than treated as an identical constellation.
How to find Pisces
- Choose an evening when the ecliptic southeast of the Great Square is well placed and use a planisphere or sky app set to your location and time.
- Begin with the brightest anchor, Alpherg, then verify the surrounding angles rather than relying on the artwork alone.
- Trace toward Gamma Piscium; binoculars help separate the genuine stars from background Milky Way fields or light pollution.
- After confirming the pattern, centre M74. Start at low magnification and increase power only after the target is securely located.
Bright stars in Pisces
Alpherg
Notable star- Magnitude
- 3.6
- Distance
- 294 ly
Alpherg is a characteristic stellar landmark used when tracing this constellation; its brightness, colour or multiplicity rewards comparison in binoculars or a telescope.
Gamma Piscium
Notable star- Magnitude
- 3.7
- Distance
- 138 ly
Gamma Piscium is a characteristic stellar landmark used when tracing this constellation; its brightness, colour or multiplicity rewards comparison in binoculars or a telescope.
Alrescha
Notable star- Magnitude
- 3.8 combined
- Distance
- 151 ly
Alrescha is a characteristic stellar landmark used when tracing this constellation; its brightness, colour or multiplicity rewards comparison in binoculars or a telescope.
Deep-sky objects in Pisces
M74
M74 is one of the most useful observing or imaging targets in this field. Its apparent size and surface brightness make dark skies and an appropriate field of view important.
NGC 488
NGC 488 is one of the most useful observing or imaging targets in this field. Its apparent size and surface brightness make dark skies and an appropriate field of view important.
NGC 520
NGC 520 is one of the most useful observing or imaging targets in this field. Its apparent size and surface brightness make dark skies and an appropriate field of view important.
Meteor showers associated with Pisces
Piscids
Peak: SeptemberA diffuse, low-rate shower with radiants in Pisces.
Interesting facts about Pisces
- Pisces's name means the fishes. Pisces entered the Western constellation record through Ptolemy,2nd century.
- Alpherg is listed at magnitude 3.6. Alpherg is a characteristic stellar landmark used when tracing this constellation; its brightness, colour or multiplicity rewards comparison in binoculars or a telescope.
- M74 is a spiral galaxy. M74 is one of the most useful observing or imaging targets in this field.
- The Piscids meteor shower is associated with this sky area and peaks September. A diffuse, low-rate shower with radiants in Pisces.
Pisces lies on the astronomical path of the Sun through the IAU sky regions. The Sun crosses 13 official constellations, including Ophiuchus; this is different from the equal 12-sign structure used by Western tropical astrology.