its BAF value in C. Carpio muscle placed it in the third position, first in gill and liver among the heavy metals.
Pb accumulated first position in water and muscle and fourth in gill and liver.
This means that some heavy metal accumulation in fish could depend not only on the concentration of the metal in the water column but also on the abiotic features of the environment (eg., pH,Redox potential alkalinity and salinity), and the duration of exposure [35, 36, 37, 38].