RGB wide filter images of the WFM (left) and NFM (right) MUSE datacube, obtained by collapsing the MUSE datacube in the same spectral regions as the HST/ACS-HCR filters F475W, F625W, and F775W for the WFM data, and F459M, F660N, and F892N for the NFM data. For the NFM data, spectral regions contaminated by instrument features fallen in the filters are excluded. In the WFM image the region studied in this work is highlighted, including PDS 456 and companions, with a dashed white box measuring 80 × 60 kpc². The cyan box indicates the size (≈23 × 23 kpc²) of the NFM FOV centered on PDS 456. The positions of the nucleus of PDS 456 are indicated with black crosses.