The aim of this study was to compare distribution of the total mercury (THg) content in three marine fish species: European seabass (Dicentrarchus labrax), Gilt-head bream (Sparus aurata) and Res scorpionfish (Scorpaena scrofa). Samples were collected from the Serbian market during 2014 and analysed by applying inductively-coupled plasma mass spectrometry (ICP-MS). The THg content in analysed fish samples was between 0.017 mg/kg and 0.108 mg/kg and significant differences (p < 0.05) in THg content was established only between Gilt-head bream and Res scorpionfish. The estimated weekly intakes of THg through fish consumption were several times lower than the established value.