Virial radii of the groups in the Fornax–Eridanus supercluster region, including Fornax Wall groups (black circle) and background and foreground groups with distances outside the 15–30 Mpc h⁻¹ range (red circle). The background and foreground groups within two times the virial radius of Fornax Wall groups and 1 deg around massive galaxies (green cross). Also shown are objects removed manually (red points), brightest group members in the Fornax Wall from R24 (purple points) and dwarfs from the T21 catalogue after background galaxy removal through scaling relation (grey points), and dwarfs from the T24 catalogue (blue points) are also included.