Biomarker responses in mudskipper (Periophthalmus waltoni) from the coastal areas of the Persian Gulf with oil pollution

► We considered Periophthalmus waltoni as an indicator. ► We assessed EROD, GST and FACs as selected biomarkers of detoxification process. ► 3 stations with different levels of oil pollution assessed in the Persian Gulf. ► Increasing pollution will increase all these biomarker responses. ► Enzyme activities were higher in male mudskipper.