This research had been conducted in April up to June 2014 in Laboratory of Parasite and Fish Diseases, Faculty of Fisheriesand Marine Sciencesof Riau University. This research aims to find out the type of bacteria pathogenic potentially infect slice of fish in the Kampar River, Teratak Buluh Village in Riau Province. The adventages of this research is to provide the types of bacterial pathogens…