Piscis Austrinus, the southern fish, is best situated for viewing in autumn for northern hemisphere observers.  It resides below Aquarius and above the more southerly constellation Grus.  The lucida of Piscis Austrinus is Fomalhaut, the 18th brightest star in the night sky and a relatively close one to the Sun at about 25 light years distant.  Fomalhaut is notable for an extensive debris disk surrounding it and has been studied in great detail by a variety of terrestrial observatories and satellite-based telescopes.  The stars of this constellation trail away to the west from Fomalhaut in a short northerly arm and a longer southerly arm, linking the faint stars together in zig-zagging chains.  There is only one easily observable deep sky object in the constellation, a magnitude 10.9 galaxy known as NGC 7314.  Unannotated image.