By IAU and Sky & Telescope magazine (Roger Sinnott & Rick Fienberg) [CC-BY-3.0], via Wikimedia Commons
"The Southern Fish"
Genitive: Piscis Austrini
Constellation family: Heavenly Waters
Nearest constellations: Aquarius, Capricornus, Grus, Microscopium, and Sculptor
Right ascension: 22.29h
Visible between latitudes: +50° and -90°
Square degrees: 245
Luminary: Fomalhaut (Alpha Piscis Austrini)
Named stars: Fomalhaut
Notable deep sky objects: Hickson Compact Group 90
By Gerard Mercator [Public domain], via Wikimedia Commons
Piscis Austrinus is a small constellation in the Southern Hemisphere that is visible during October. Its luminary, Fomalhaut, is the eighteenth-brightest star in the night sky.
In addition, Piscis Austrinus is a particularly old constellation; it has origins tracing back to Babylonian times.
Piscis Austrinus is often depicted as a fish drinking from a jar held by neighboring Aquarius.
Hickson Compact Group 90 (three interacting galaxies):
Fomalhaut and surrounding region: