CFHT/VESTIGE Hα image of NGC4330 shown in Fig. 3. The blue contour is drawn from the r-band image at the 23rd mag arcsec⁻² and identifies the region of the galaxy disc. In the text we refer to the Hα flux inside this region as the disc flux, and we refer to the Hα flux outside this region as the stripped flux in the tail. The black dashed line marks the separation between the upturn region (E of the centre) and the HI tail region (W of the centre). Five filaments of stripped gas are highlighted with blue segments and labelled F1 to F5 from east to west.