Parasitism may cause morbidity and mortality in ornamental fishes, and may also affect the growth and behavior of fishes. This study was conducted to investigate the parasitic infections in ornamental fishes that imported in Pakistan. Ornamental fresh water fish „Pterophyllum scalare‟ is commonly called as “Angelfish”. Angelfish are native to the Amazon River Basin in South America, and they have been effectively breed and rose as aquarium fish since 1940s. In this experiment, a total of 50 angel fishes were examined during the period from January-2017 to June-2017 in Fish Health and Management Laboratory of University of the Punjab, Lahore. Two species of parasites monogenean and digenean were identified. From the parasitic observation it appeared that gills are main infested areas and gill filaments are damaged by the parasites. A total of 3853 Dactylogyru were recorded in the gills of angelfish under observation. It comprised 94% of total infection. The mean intensity and abundance of Dactylogyrus on angelfish were 82.06 and 77.06 respectively. Metacercaria were also found encysted on gills (infection prevalence 6%, mean intensity 2.6 and abundance 0.16). It was also observed during this study that parasitic infection increases in harsh environment. Parasitic attack increases during April and May. Parasitic disease can impact marketability (appearance, size, health status) and root a reduction in value, resulting in economic losses that exceed loss related to mortality. The introduction of transmissible parasites through the import of ornamental fishes may cause serious disease problems in native fish species, which may have negative impact on emerging ornamental fish trade in Pakistan. Keywords: Parasitic diseases, Ornamental fish, Angelfish, Dactylogyrus.