Author(s):

Latashri Dutta, Rabi Rajbongshi, Shikha Rani Sarma and Parag Deka

Abstract: The present study deals with the effect of Copper on hematological parameters of a live cat fish species Heteropneustes fossilis (Bloch) under optimal laboratory and physicochemical condition. Most of the physicochemical parameters like DO, FCO₂, p^H, TA and TH of the experimental aquariums are observed to be maintained at the productive range. During the experiment, LC50 was determined which is 4.5 mg. l-¹ (CuSO₄ as Cu) and thereafter fishes were treated with sub lethal LC₅₀ concentration (1/5^th of LC₅₀ concentration i.e. 0.9 mg.l^-1 CuSO₄ as Cu) and examined the haematological alteration after a treatment period of 24 hrs, 48 hrs, 72 hrs and 96 hrs interval. The result reveals that there is decrease in RBC and Hb% during the investigation period. Moreover significant increase of WBC number has been observed with increasing time during the investigation period.

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