This research was conducted from January to February 2018 in the halls 0f the fishery seeds Tarantang Subsdistrict, Harau, West Sumatra Province. The aims of this research was to know the effect of common carp (Cyprinus carpio) pituitary gland injected with different dose on ovulation and survivaln rate of komet (Carassius auratus) and To find the best dose ot the pituitary gland to stimulate o…