Effect of urea exposure on the hematological parameters of Clarias batrachus

Abstract Hematological parameters, viz. hemoglobin content, erythrocyte count, and hematocrit values, of the freshwater fish Clarias batrachus upon its exposure to 50 and 100 ppm of urea in aquatic medium decreased by 7.93 and 16.22, 20.96 and 29.12%, and 11.11 and 36.65%, respectively, below controls, while the total leucocyte count increased by 29.26 and 52.63%, respectively, above controls.