This study was conducted from 10-17 May 2018 in the waters of Cempedak Island Bintan Regency of Riau Islands Province. The purpose of this study is to analyze the abundance of Chaetodontidae, to calculate live hard coral cover and see the relation of Chaetodontidae fish with live hard coral cover. The study was conducted at three station points at depth ranging from 4-5 m using Underwater Visua…