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Concentration of lead in water and tissue samples of wild O. niloticus collected from Mariotteya Nile stream.
| Sample | Lead concentration | P-value | FAO permissible limit |
|---|---|---|---|
| Water | 0.611 ± 0.21 mg L−1 | ˂ 0.01 | 0.05 mg L−1 |
| Muscle | 4.69 ± 1.2 mg kg−1 | ˂ 0.05 | 0.5–2 mg kg−1 |
| Liver | 11.08 ± 2.3 mg kg−1 | ˂ 0.01 | |
| Gills | 9.60 ± 3.1 mg kg−1 | ˂ 0.01 |
Values are presented as mean ± SE (n = 3).
