ABSTRACT Pineapple peel (Ananas comosus) was an organic waste that can be used as an antimicrobial / antibacterial because it contains secondary metabolites, such as flavonoids, tannins, and saponins. Edwardsiella tarda was pathogen that can cause diseases in cultured fish. The research aimed to determine the sensitivity of pineapple peel extract (A. comosus) in inhibit the growth of E. tard…