Keanekaragaman Ikan di Bagian Hulu Sungai Horas, Kecamatan Hatonduhan, Kabupaten Simalungun, Sumatera Utara

Abstract

The study on the diversity of fish has been conducted at Horas river, district Hatonduhan, Simalungun regency during March 2016. Purposive sampling method was used to determine three stasions of the research based on community activities at the river. The research found six genera of fishes, classified into one class, three ordos (Perciformes, Cypriniformes, Siluriformes) and four families (Cyprinidae, Channidae, Mastacembellidae dan Clariidae). The highest density was found at 2nd stasion with the value of 0,043 ind/m2 and the lowest was found at 3 rd stasion with the value 0,032 ind/m2 . Diversity index from all stations were low with ranges from 1,15 to 1,77. Pearson correlation analysis indicated that temperature, light penetration, pH value are strongly correlated with the diversity of fishes.