ABSTRACTThe aim of this research was to determine the effect of ovaprim, hCG and their combination on spawning success of lelan barb(Osteochilus pleurotaenia Blkr). This research was conducted from 6 September -27 october 2019 at the Fish Hatchery and Breeding Laboratory, Fisheries and Marine Science Faculty, Riau University.The method used was an experimental method with a Completely RandomizedDesign (CRD)with four treatments and three replications.The treatments wereP0 (NaCl physiology 0,9%/kg of body weight), P1 ( Ovaprim 0,6 mL/kg of body weight), P2 (hCG 0,5 900 IU/ kg of body weight), and P3 (Ovaprim 0,5 mL/kg + hCG 550 IU/kg of body weight).The best result showed that treatment of P1 (Ovaprim 0,6 ml/kg)was turn of latencytime (6.03 hours), amount eggs strip (174 eggs/g gonads), egg maturition rate (81%), Ovisomatic Index (11,21%), fertility rate (21,68%), hatching rate (77,28%) and survival rate of 5 days larva (81,17%). The water quality parameters during research was in optimal temperature 280 C, pH 6 and dissolved oxygen 3,77- 5,24 ppm. Keywords :Osteochilus pleurotaenia Blkr, Ovaprim, hCG, Spawning
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