Occurrence of polychlorinated biphenyls (PCBs) in marine fish and their potential health risks was assessed in Dar es Salaam region. Six indicator PCBs was assessed in selected marine fish species, Rastrelliger kanagutra and Siganus sotur collected from the Kivukoni-Feri, the major fish market and fishermen landing site in Dar es Salaam. Fish samples were extracted using QuEChERS method and quantified by GC-MS/MS. Concentration of detected PCBs congeners in the analysed fish species were relatively low, ranging from