In the present work an attempt has been made to study the acute and chronic exposure of a carbamate pesticide, carbofuran on different haematological parameters in an air breathing fish Channa striatus (Bloch). Treatment of sublethal concentration (0.80 mg/I) of carbofuran caused an early increase in RBC count, Hb content and MCHC and decrease in PCV, MCV, MCH and ESR i.e. upto 96 hrs but after 10 days RBC count increased being normal on 30 days. MCV, MCH, MCHC and ESR showed decreasing trend. Recovery studies were also conducted. The details have been discussed in this paper.