The Great Square is in Cassiopeia's quadrant of the sky. It fits on the same meridian, with the small side of the square facing north. Unlike Cassiopeia, most of the square is ahead of the meridian. The Great Square is one square's width above the celestial equator.
The Southern Fish is below the Great Square, also on the leading side of Cassiopeia's meridian. The Fish swims backward, facing east. The Fish is about 1/3 of the way between the celestial equator and the South Pole.