Contribution to the [C II] luminosity density of the different galaxy populations (see legend) included in SPRITZ. We report two different luminosity ranges: 10⁷ L_⊙ < L_[C II] ≤ 10^8.5 L_⊙ (top) and L_[C II] > 10^8.5 L_⊙ (bottom). The grey shaded areas show the redshift range where observations are available. We highlight that SBs and SB-AGN have sSFRs ranging from log(sSFR/yr⁻¹) = − 8.8 to −8.1, which is above the main sequence at low-z, but on it at z = 5 − 7.