Hematological Parameters of Freshwater Fish Anabas Testudineus after Sublethal Exposure to Cypermethrin

The experiment was conducted to evaluate the hematological effect of cypermethrin, a synthetic pyrethroid on Anabas testudineus.The effect was assessed based on the comparison results of control group and experimental groups exposed to sublethal concentrations (0.015, 0.030, 0.045 mg L -1 ) of cypermethrin on 7 th , 14 th and 21 st days.It was observed that with the increase of cypermethrin concentration, Red Blood Cell (RBC) counts, hemoglobin (Hb) levels, hematocrit (Hct) levels and thrombocyte (platelet) counts decreased.White Blood Cell (WBC) counts increased on 7 th day of exposure but WBC counts decreased with the increase of cypermethrin concentrations after 14 th and 21 st days.The results are statistically significant at p < 0.05 level.These reports indicate that hematological parameters may be useful as a diagnostic test for cypermethrin exposure in A. testudineus.