Revision of some morphometric characteristics and building the standard haematological reference value in Rita rita from Pakistan

Abstract

This study was aimed to measure some morphometric and haematological characters of Rita rita captured in the L.B.D canal from river Ravi. The morphometric measurement was carried through measuring tape and scale rod and weight was taken with the help of digital balance. The haematological analysis was carried out through the Neubauer haemocytometer. The weight of fish was 86.55±52.23 g, length with tail 18.72±3.66 cm, total length without tail 15.40±2.79 cm, length of tail/caudal fin 3.34±1.05 cm, and the girth/width 10.88±2.23cm. The distance between eyes was 2.08±0.41cm, between nostrils 1.23±0.30 cm. Length of mandibles was 2.14±0.69 cm, maxilla 2.31±0.74 cm, width of head 4.25±1.65 cm, diameter of eye 0.25±0.10 cm. Length of dorsal fin was 4.57±1.51 cm, width 2.71±0.83 cm, length of adipose fin 2.17±0.50 cm, width fin 0.72±0.2cm, length of anal fin 2.34±0.54 cm, width 1.84±0.57 cm, length of pectoral fin 3.63±0.90 cm, width 2.15±0.53cm, length of pelvic fin 2.16±0.87cm and width 1.40±0.42cm. The number of rays of the dorsal fin was 6+1±0.30, anal fin 9±1.36, pectoral fin 6+1±0.98, pelvic fin 7±1.02, and tail /caudal fin 17±1.31. The relationship between length and weight showed that the relationship was non-linear and growth was allometric. Regarding the haematological analysis, RBCs were 4.92±0.45 x106/mm3, haemoglobin 8.6±2.11g/dL, WBCs 2.32±0.30, platelets 53.4±11.07, neutrophils 7.4±3.2%, Lymphocytes 89.2±4.26%, Monocytes 2±1.55% and Eosinophils 1.2±0.4%. The alkaline phosphatase (ALP) and acid phosphatase (ACP) was above than reference value which showed that river pollution has started damaging the body organs of fish.