Chemokines are essential for vertebrate immune regulation, and teleosts possess diverse CXCL8 lineages. However, studies on CXCL8 in C. auratus remain limited. In the present study, four CXCL8 homologues ( CaCXCL8‐1 to ‐4 ) were successfully cloned and identified from C. auratus , and their expression patterns were analysed in the tissues of healthy and those naturally infected with H. doneci . Bioinformatic analyses revealed...