| Summary: | The present study was conducted to find out the prevalence, intensity and density of protozoan parasites of freshwater catfishes. Total four species of protozoan parasites were collected from 294 fishes. Out of four, three were ectoparasites and remaining one was endoparasite. Among the ectoparasites, Ichthyoptherius is the most prevalent parasites followed by Trichodina and Myxobolus. Among the infected fishes, Wallago attu (37.80%) harbored maximum number of ectoparasites followed by Clarius batrachus (33.78%), Heteropneustes fossilis (32.86%), and Mystus vittatus (26.47%). In the present investigation it was observed that none of Wallago attu and Mystus vittatus was infected with Trypanosoma, endoparasitic protozoa.
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