Diversity, evenness, dominance, and similarity index of river fish in Krueng Teunom water, Aceh Jaya

Abstract The objective of the study was to determine diversity fish species found in Teunom River, Aceh Jaya Regency, Province. research conducted from August 2019 until Juli 2020. This used an Exploration Method. station determined by purposive sampling based on environmental conditions along river flow. Fish samples were collected using fishing rods, traps, and nets. results identification indicate there 431 individual that divided into 11 families 16 species. commonly family Cyprinidae with six namely Labtobarbus hosii, Anematichthys apogon, Rasbora sp., Tor tambroides, Osteochilus kappenii , dan vittatus . five stations’ index (H’) classified as low moderate criterion a value range 0,80 1,86. dominance (C) ranged 0,17 0,52. evenness (E) 0,43 0,97. While similarity between stations 0,0% 0,89%. physics-chemical condition River water considered be optimum for survival fish.