This study aims to analyze and determine the best stocking density for the growth and survival of snakehead fish (Channa striata) seeds maintained in a recirculation system given herbal probiotics at a fixed dose (200 ml/kg feed). This study was conducted at the Cultivation Technology Laboratory, Faculty of Fisheries and Marine Sciences, University of Riau, for 56 days on May 5 to June 21, 2025…