In present study cestode parasite of freshwater fishes from yeldari dam and seasonal infection were analysed. Mastacembalus armatus (Lacepede, 1800), Channa punctatus (Bloch, 1793), Mystus seenghali (Sykes, 1839) and Wallago attu (Bleaker, 1857) collected from Yeldari Dam. Among freshwater fish intestine were contaminated with cestode parasites during dissection of fishes. Three species were detected that are Circumonchobothria sp., Gangesia sp. and Senga sp. Also, Prevalence and density of cestode parasites during oct 2019 to nov.2020. The maximum prevalence of cestode parasites observed in summer month (March2020 to May 2020). In March to May 2020 maximum cestode parasites were collected from freshwater fishes.