2023. Study of the concentration level of heavy metals in water and some tissues of common carp, Carpinus carpio L. which is cultured in cages in the Euphrates River . University of Thi-Qar Journal of agricultural research. 12, 2 (Oct. 2023), 247–256. DOI:https://doi.org/10.54174/utjagr.v12i2.266.