Primary beam-corrected constant H I contours from MeerKAT (blue) overlaid on a FDS (Iodice et al. 2016) gri stacked optical image. The lowest contour represents the 3σ column density level of N_H I = 1.4 × 10¹⁹ atoms cm⁻² over a 44.1 km s⁻¹ channel, where the contours increase by a factor of 3ⁿ (n = 0, 1, 2, ...). The group galaxies are labelled and the galaxies not detected in H I are outlined by a dashed black ellipse. The grey circles indicate the sensitivity of the primary beam (Mauch et al. 2020) at 50%, 10%, and 2%. The red dashed circle denotes the 1.05° (0.38 Mpc) virial radius of the group as adopted in Drinkwater et al. (2001), where the restoring beam (33.0″ × 29.2″) is shown in the bottom left corner and a scale bar indicating 20 kpc at the distance of Fornax A in the bottom right corner. The direction to the Fornax cluster is shown by the black arrow. In H I, we detect 10 (out of 12) galaxies, previously known clouds and streams in the IGM and a population of new H I clouds in the IGM. The previously known IGM H I structures are labelled in Fig. 4 for clarity.