Abstract
Coral reef ecosystem is considered as a very complex ecosystem and a habitat for marine biota, included reef fish community. The purpose of this study is to obtain the value of diversity, evenness and dominance index of reef fish in Krueng Raya Waters (KRW). This research was conducted annually during 2014, 2015, 2016 using the UVS (underwater Visual Census) method. The diversity index of reef l fish in the KRW is categorized as stable (1 <H '<3), yet it was decreased from 2.6 in 2014 to 2.1 in 2016. the value of uniformity index is ranged 0.8 to 0.62 (2014 to 2016) as it categorized as low. Furthermore, the dominance index is also indicated in the low category.
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