Abstract Study aims to determine the best dose in rearing hoven’s carp (Leptobarbus hoevenii) by feeding with herbal supplements added to the recirculation system. This research was conducted from 16 January - 24 February 2022 at the UPT Experimental Pond of the Faculty of Fisheries and Marine Scnie, University of Riau. The container used was a black tub with a volume of 100 L as many as 15 …