Ompok hypophthalmus is one of the endemic fish species of Riau. It has high economic value; however, the aquaculture of Ompok hypophthalmus has been declining.. This study aim to determine the effects of different corn oil enrichment dosages and durations on water fleas and their impact on the growth and survival of Ompok hypophthalmus larvae. This research is conduct on December 1, 2024 -Janua…