Morphology-density relation of galaxies in filaments around the Fornax-Eridanus complex. Top panel: Length of each filament (stars) versus the number of galaxies belonging to it. In all panels, the colour bar indicates the normalised galaxy number-density of each filament (N_gal/l), and circles highlight filaments that constitute the Fornax Wall (includes filament 19). Lower-left panel: Normalised galaxy number-density versus the percentage fraction of ETGs in each filament, represented by crosses. Lower-right panel: Same as the lower-left panel, but for LTGs. Here, each diamond represents a filament.