A comparative study on blood parameters of two species of cyprinid fish


A total of 27 grass carp Ctenopharyngodon idella (Val., 1844) and 24 silver carp Hypophthalmichthys molitrix (Richardson, 1845) were collected from the Fish farming station of Marine Science Centre- University of Basrah.Packed cell volume (P.C.V.), haemoglobin concentration (Hb), red blood cells count (R.B.C.) and white blood cells counts (W.B.C.) were estimated. The results show that the silver carp have higher blood parameters than those of grass carp, and there is a strong positive correlation (r=0.50-0.83) between the values of P.C.V. and Hb in both fish species.In general, the male fishes have higher blood parameters than those of females and there are no significant differences between sexes.