Bioaccumulation of Some Heavy Metals: Analysis and Comparison of and from Sardaryab, Khyber Pakhtunkhwa.

We examined and compared heavy metals bioaccumulation in and netted from Sardaryab, a tributary of River Kabul. By using atomic absorption spectrometry we assessed different organs including livers, gills, and muscles. Metals studied were chromium, iron, zinc, lead, and copper. Livers of both species showed higher concentrations of metals while muscles showed the least amount. Chromium and iron were the highly concentrated metals in the gills and livers of both species. A quantity of 0.154 ± 0.011, 0.199 ± 0.0079, and 0.024 ± 0.008 g/g of chromium was found in the gills, livers, and muscles of , respectively. Similarly, the gills, liver, and muscles of contained 0.133 ± 0.008, 0.165 ± 0.01, and 0.019 ± 0.006 g/g of Cr, respectively. Iron was highest in carp in the range of 0.086 ± 0.01 in gills and 0.067 ± 0.011 g/g in muscles, comparatively. All the studied metals were found within the US recommended daily dietary allowances (RDA) limits; hence no immediate risk in their consumption for human was found. The data showed that being omnivorous and bottom feeder stored higher concentrations of metals as compared to .