The Suitability of a Dozen of Marine Fish Species for Human Consumption

Jazan is considered among the most productive fishing areas in Saudi Arabia, because there are about 50 edible fish species for human consumption out of more than 250 varieties; thus, it is considered the third-largest port with a total length of 250 km coastline on the Red Sea. Moreover, Jazan is a residential area with a high density of many industrial and agricultural activities. Nevertheless, there are not enough environmental published studies about that important region.


A research team in the Department of Chemistry; consist of Proffesor Tarek Said, Doctor Ahmed Omran, Doctor Khaled Fawy, and Doctor Abubakr Idris; has conducted, for the first time, a monitoring study to evaluate some of the heavy metal levels in commercially important fish species consumed locally. After collecting many fish samples from different fisheries in Jazan (Red Sea coasts) and conducting the necessary chemical analysis through many chemical equipments, the research team has found that the concentrations of Ni, Cu, Zn, and Cd are within the detection limit for all samples, whereas the concentrations of Co, Cr, are Pb are less than the detection limit of the used instrument. Moreover, the research team has confirmed, through Target Hazard Quotient (THQ) method, that those fish species are safe for human being consumption in weekly basis with the exception of the concentration of Cd in some fish species. In addition, a comparison between the observed levels of heavy metals with similar levels of World Records has been done. It has been found that the current levels were ≤ levels established by the Food and Agriculture Organization and the World Health Organization for human consumption of fish, with some exceptions.


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