Distribution of voids obtained by AVISM when applied to a z = 0 snapshot of the TNG300-2 simulation on four different matter tracers: dark matter particles, gas particles, haloes and galaxies. The images show, for each tracer, all voids intersecting a thin slice of 302.6 Mpc side and ≈10 Mpc depth, together with the integrated density field, for which a colour bar is displayed. Voids matching those from the reference catalogue (using haloes as matter tracers) with a DSC coefficient larger (smaller) than 0.4 are displayed using the same colour and continuous (dotted) lines.