Abstract
Some haematological and physical properties of Clarias gariepinus cultivated in water contaminated with phthalate, benzene and cyclohexane over a period of 56 days were examined. The haemoglobin (Hb) and packed cell volume (PCV) concentrations of test animals were found to be significantly lower than those of control ( p<0.05). The gain in body weight of male C. gariepinus cultivated in uncontaminated water (control), water contaminated with phthalate, benzene and cyclohexane was found to be 11.88±0.55, 13.5±0.62, 21.60±1.03 and 27.54±1.22 g, respectively. Serum cholesterol concentrations of fish cultivated in contaminated water were found to be significantly higher than those of control ( p<0.05). The experimental results suggested that the pollutants may cause anaemia in the fish as evident in the Hb and PCV results. It could also be inferred that the gain in body weight may be due to impaired fat metabolism which might have led to elevated levels of serum cholesterol and triglycerides in the fish. It is our view that consumption of such fish may cause hypercholesterolemia.
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