Calliandra leaf meal is a potential raw material for gourami feed because it has a high protein content (25.08%). This study aims to get the best amount of fermented calliandras leaf flour in feed for the growth of gourami fish fry (Osphronemus gouramy). The research method used was a completely randomized design (CRD) with 5 treatments and 3 replicates. Fish were fed using subsituted fermented…