Hemibagrus nemurus (Valenciennes, 1840) is one of the freshwater fish with high economic value and popular with the public. The bream in Siak River, Pekanbaru City, faces pressure due to environmental pollution, especially by heavy metals. This study aims to determine the growth pattern of baung fish and the quality of Siak River waters. The research was conducted in 2 locations, namely Kecamat…