Blue swimming crab is fishery commodity that has high economic value. The aim of this study is to know the best stocking density on growth and survival rate of blue swimming crab (Portunus pelagicus) in recirculation system. This research was conducted in July-August 2019, located in Center for Brackish Aquaculture Fisheries (BBPBAP) Jepara. The methods used was the exprerimental method, namely…