Abstract

• Freshwater fish culture is a major source of aquaculture production in Myanmar. In 2015-2016, the production of freshwater fish at 2.59 million MT (46% of total freshwater fish production). Examination of parasitic infection in freshwater as well as in marine fishes in Myanmar is still required to improve Myanmar aquaculture system. The present study was carried out to isolate and identify of different parasites and prevalence and mean intensity of infection from Piaractus brachypomus. A total of 240 fishes were observed in between August 2017 to July 2018 from Lay Daung Kan fish farm. Skin, gills, eyes, brain, heart, liver, gallbladder, muscles, intestine and kidneys were examined for infection. The isolated parasites were Myxobolus sp.1 and Myxobolus sp.2 were found in gills and gallbladder, Trichodina heterodentata in the gills and skin, Ichthyophthirius multifiliis in the skin and Mymarothecium viatorum and Mymarothecium boegeri in the gills respectively. Highest prevalence of infection was recorded in Monogenea parasites during the study period.