NGVS u, g, i-colour composite image of the UDG galaxy NGVS 3543. The yellow arrows indicate the direction towards the Virgo cluster elliptical galaxies M 87 and M 60 at a distance of 1.26 Mpc and 0.39 Mpc, respectively. Blue dashed contours indicate the GALEX NUV detection at a surface brightness level of 27 mag arcsec⁻² and red contours indicate the Hα detection in VESTIGE at the level of 1.6 × 10⁻¹⁷ erg s⁻¹ cm⁻² arcsec⁻² (3σ). The white circle marks the position of the VLA HI detection of the source AGC 226178 from Cannon et al. (2015) with a beam size of 49″. The green dashed region along the northeast of NGVS 3543 shows the possible tidal feature discussed in Sect. 4.3.