This research was conducted from October to November 2019 at the Kualu Nenas Village peatland, Tambang sub-district, Kampar Regency, Riau Province. The purpose of this research is to find the best influence and comparison of the mixture of human feces biofertilizer with cow feces against the fluctuation of ammonia, growth and survival rate of patin (Pangasius hypophthalmus). The fish test …