Heavy metals, due to their indestructible nature, pose a serious threat to the health of aquatic animals as well as humans if a high concentration of them accumulates in the tissues of aquatic organisms. For this purpose, the present study was done with the aim of inves
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Heavy metals, due to their indestructible nature, pose a serious threat to the health of aquatic animals as well as humans if a high concentration of them accumulates in the tissues of aquatic organisms. For this purpose, the present study was done with the aim of investigating native Bunni and Shabout fishes in tropical fish breeding farms of Khuzestan province with the perspective of contamination by heavy metals and risk assessment for consumers. In present study, the concentration level of thirteen heavy metals (arsenic, cadmium, cobalt, chromium, copper, iron, mercury, manganese, molybdenum, nickel, lead, tin and zinc), in the muscle tissue of (Mesopotamichthyssharpeyi) and (Barbus gryous) was measured. The results of this study showed that there were no significant difference between the concentration of heavy metals measured in Bunni and Shabout fishes. The findings of the research indicated that iron and arsenic had the highest and lowest concentrations in the muscle tissue of Bunni and Shabout fishes, respectively. Comparison of measured heavy metals with international health standards showed that the concentration of all metals except lead were significantly lower than the permissible limit (p < 0.05). The concentration of lead was significantly higher than the permissible limit (p < 0.05). The assessment of health risk showed that daily and continuous consumption of these products by consumers is completely safe, except for cadmium and lead and there is no risk for them. The average concentration of all measured metals except lead were lower than international standards. The estimation of daily intake of all measured heavy metals except cadmium and lead were less than global standards. The estimation of daily intake in all metals except cadmium and lead showed that the consumption of Shabout and Bunni fish currently does not pose a risk to human health, however, in order to prevent possible contamination in the future, management should pay more attention to these pollutants and their possible sources.
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