Copper, mercury and zinc pollution of claries lazera

A total of 50 samples of Clarias lazera were collected from Alexandria fish markets. The average content of copper [ug/g] in muscles, kidneys, liver, gills and blood were 05.8 +/- 1.1, 11.6 +/- 2.1, 36.3 +/- 2.14, 06.3 +/- 1.32, and 04.6 +/- 0.57, respectively, and 0.02 +/- 0.001, 0.03 +/- 0.027, 0.09 +/- 0.015, 0.02 +/- 0.001, and 0.03 +/- 0.017, for mercury, while 22.5 +/- 0.884, 28.3 +/- 2.26, 06.7 +/- 1.75, 31.5 +/- 2.7, and 24.5 +/- 1.85 for zinc. The public health significance of the pollution with such elements was discussed