BIODIVERSITAS DAN POPULASI IKAN KARANG DI PERAIRAN SELAT SEMPU SENDANG BIRU KABUPATEN MALANG JAWA TIMUR REEF FISH BIODIVERSITY AND POPULATION IN SEMPU STRAIT WATERS SENDANG BIRU MALANG REGENCY EAST JAVA

Reef fish is one of the conspicuous inhabitant in the reef ecosystem. Damage to coral reefs in many countries due to human factors (anthropogenic) and naturally has an impact on the abundance of different species of reef fish. Over fishing is one of the causes of death of reef fish are widely reported. The nature reserve of Sempu Island also became conservation areas for reef fish. Monitoring of reef fish actually can determine on condition of coral reefs, fisheries potential and suitability of ecosystem based on the number of fish that live in the surrounding reef. Observations were made at 3 m depth in the Sempu strait. We used the Reef Check line intercept transect along 100 meters in two research stations. Result showed that 5 families of reef fishes was found, there were Chaetodontidae, Haemulidae, Lutjanidae, Scaridae and Muraenidae. Diversity Index (H ') reef fish in Teluk Semut was 0.215, and dominance index (C) was 0.083. Observations showed that coral reef conditions have correlation to the distribution of reef fish, and the presence of reef fishes can be used as bio indicator of the coral reef damage.