Abstract
The present investigation was carried out to study the effect of parasitic infection on the haematological and biochemical parameters of fishes. For this study total 110 fish of Channa punctatus and Channa striatus were examined for parasites. The parasites recovered were protozoans (Trichodina sp., Ichthyoptherius sp., and Myxobolus sp.) and crustaceans (Ergasilus sp., Lernea sp., Lamproglena sp. and Argulus sp.) with a total prevalence of 64.54 % and mean intensity of 4.47. The result of the present investigation showed that RBC, PCV and Hb% decreased whereas WBC increased significantly in infected fish. The result also showed that aspartate aminotransaminase (AST) and alanine aminotransferase (ALT) enzyme activities as well as creatinine and urea levels were increased in the infected fishes. However, serum glucose level was decreased in parasitic infected fishes. Thus, the result of the present study revealed that infected fish suffer from anemia and tissue damages caused by parasitic invasion.
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