Ionised gas in FCC 167. Top left panel: surface brightness (in log scale) of the [NII] λ6583 line already highlighting a tail of ionised gas connecting to the main reservoir. Top second panel: velocity map indicating organised motion along the major axis; there are several additional kinematic features towards the outskirts. Top third panel: an axisymmetric kinematic model of the measured velocity map. Top right panel: velocity dispersion of the [NII] line showing a central peak and hints of a spiral-like shape. Bottom left panel: reddening, E(B − V), by diffuse dust (as opposed to emission-line reddening) derived from the spectral fitting. Blue contours correspond to molecular gas emission measured by ALMA (see Fig. 5). Bottom second panel: reddening, E(B − V), of the emission lines which is much stronger than the diffuse reddening component, and without any distinct features. Bottom third and right panels show the [NII]/Hα line ratio and Hα EW, respectively. Together these two maps indicate low level star formation inside the dust ring and nuclear ionisation due to an AGN.