In the present study, a haplosporidian parasite was detected in the freshwater mussel _Caelatura aegyptiaca_. This mussel was collected from a site located on the eastern bank of the River Nile about 21Km north of Sohag city. The haplosporidian parasite was found to inhabit different organs of the host such as gills, mantle and foot. Their epithelial and connective tissues ... Read more