The research was conducted from February 9th 2017 to March 23rd 2017 in the Fish Hatchery and Breeding Laboratory Aquaculture of Fisheries and Marine Faculty, Riau University. The aim of this research was to find out the influence of photoperiod and thermal on the grow and larvae survive of baung fish (Hemibagrus nemurus). The method used in this study is an experimental method using a Complete…