Occurrence of parasites in <i>Labeo rohita</i> (Hamilton) from Rajshahi

An investigation was made on the parasitic infestation of an indigenous major carp, Labeo rohita collected from different water bodies of Rajshahi district during April 2006 to January 2007. A total of 70 host fishes were examined during the study period of which 55 fishes were found infected by numerous protozoan and metazoan parasites. In all 2348 parasites belonging to eight genera were recorded from the surveyed hosts. Among them six were ectoparasites (Trichodina, Myxobolus Chilodonella, Dactylogyrus, Gyrodactylus and Argulus) and two were endoparasite (Eucreadium and Camallanus). The infestation exhibited monthly or seasonal fluctuation, the maximum abundance of parasites was recorded in the month of December and the minimum in July. It was observed that the infection was the maximum…