RGB image of the galaxy 9856 composed using the same JWST/NIRCam filters of Fig. 1 with overimposed, in cyan, the [O II] map from MUSE data (PI: J. Richard). Based on data obtained from the ESO Science Archive Facility with DOI: https://doi.org/10.18727/archive/42. The tail appears truncated and detached from the galaxy due to the data coverage of the MUSE datacube. In green, the clumps for which the redshift is measured in the Astrodeep catalogue.