Analysis of galaxies with a break in their surface brightness profiles. Circles represent Type III, with average (g − i) colour of h_out − h_in as colour map. Orange triangles and green circles represent Type II and Type III galaxies in the Fornax cluster core (data taken from Raj et al. 2019). Top panel left: stellar mass as a function of break radius. Top panel right: total magnitude as a function of break radius normalised to effective radius. The red dashed line indicates 80% of the Fornax cluster core galaxies with disc-breaks. Bottom panels: absolute magnitude in i-band as a function of inner scale-length h_in (left) and outer scale-length h_out (right).