Ecology, Environment and Conservation Paper

Vol 27, Issue 1, 2021; Page No.(216-221)

FRESHWATER FISHES OF GEGAS DAM, SOUTH SUMATRA INDONESIA: COMPOSITION AND DIVERSITY

Dian Samitra, Harmoko, Sepriyaningsih, Zico Fakhrur Rozi, Arum Setiawan and Indra Yustian

Abstract

Fish studies can be essential information about the health of aquatic ecosystems as well as a basis for policy making management of fish resources. Study of fishes in the Gegas Dam has never been reported. This study aims to determine the diversity of fish in the Gegas Dam. Data collection was conducted during rainy season in March 2020 at the Gegas Dam, Musi Rawas Regency, South Sumatra. Fish samples were caught with fish bait, cast net, gill net, and hexagonal fish trap. The fish obtained are tabulated based on species, genus and family. Data analysis included the index of Shannon diversity, Pielou’s evenness index and Simpson dominance index. Total fishes collected during the study were 414 individuals. The composition of the fish consists of 25 species representing 19 genera, and 12 families. Desmopuntius gemellus is the species most caught during the study. The results of diversity index analysis were 3.01, evenness index was 0.93 and dominance index was 0.05. Diversity in the Gegas Dam is of medium category with high species evenness and no species dominate.

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