Rhizophora apiculata is one of the mangrove plants with a local name Mangrove Oil which contains a lot of compounds Flavonoites, Saponins, Steroids, Terpenoids, and Tanins. This study aims to see the picture of erythrocytes and improve the survival of Siamese jambal (Pangasius hypophthalmus). The method used was an experimental method with Completely Randomized Design (CRD), one factor with 5 l…