The aim of this research was to determine the effect of ovaprim, hCG and their combination on spawning success of lelan fish (Osteochilus pleurotaenia Blkr). This research was conducted from 6 September -27 october 2019 the Fish Hatchery and Breeding Laboratory, Fisheries and Marine Science Faculty, Riau University. The method used was an experimental method with a Completely Randomized Design …