This research was conducted on August to October 2017 in Fish Seed Center Sei Tibun, Kampar. Thei aim of this research was to determine the exact of companior fish in accelarating of Pangasius polyuranodon in controlled enviroment as aquaculture. The size of Juaro was using 6-10 cm. The method was using the experimental method with five treatment and three replications, the treatment were P0 (…