Ratianingsih, R., Ismawati, N., Puspita, J.W. and Jaya, A.I. 2017. The role of top-predator in the preservation of coral reefs ecosystem. Communication in Biomathematical Sciences. 1, 1 (Dec. 2017), 54-61. DOI:https://doi.org/10.5614/cbms.2017.1.1.5.