Vol. 2, Issue 9, Part J (2016)

Abstract
Haematological parameters are repeatedly used as an essential tool to assess the health condition of fish. Although fish haematology continues to offer the potential of a valuable tool, progress in establishing normal range valves for blood parameters has been slow and literature in this area is isolated, old and often incomplete. The purpose of this study was to assess the reference values of some haematological parameters of three Indian major carps Labeo rohita, Catla catla, Cirrhinus mrigala which are mostly cultured collected from different freshwater ponds in West Godavari district of Andhra Pradesh from August 2014 to July 2015. Variation in haematological parameters such as erythrocyte count, total leucocytes count, haemoglobin, hematocrit, mean corpuscular volume (MCV) and mean corpuscular haemoglobin concentration (MCHC) of fish were observed when compared to the earlier reference values. So a continuous assessment is essential for establishing the reference values in the field of haematological research basing on the area of the study and time durations.