During the present study, a nematode and two acanthocephalan parasites of freshwater fishes were collected from Assuit city to be examined by scanning electron microscope (SEM). The surface fine structure of the three parasites, was revealed in order to help their identification and distinction from other allied species. These worms are: 1-Procamallanus laeviconchus (Wedi, 1862), Baylis, 1923, in which SEM illustrated: six anterior elevations or lips, four submedian cephalic papillae, minute saw-like teeth at the bottom of the buccal capsule and eight blunt caudal papillae. These may be important features in differentiation between different Procamallnus spp. 2-A- Rhadinorhynchus niloticus Mohamadin, 1989. B- Acanthogyrus (Acanthosentis) tilapiae, Baylis, 1947. SEM of acanthocephala illustrated more detail structures in the proboscis and body spines which are of great importance in generic and species identifications