Analysis of Water Quality from Several Rivers as Habitat of Mungkus Fish (Sicyopterus sp.) in Bengkulu Province

Mungkus Fish (Sicyopterus sp.) is Gobiid fish inhabiting fast flowing and good quality river in Bengkulu Province. Today, it is rare to find Mungkus fish in the river. One of the extinction threats is the decline of water quality. This research was aimed to measure abiotic factor like chemical and physical factor in several rivers in Bengkulu Province where can be found Mungkus fish. Sampling was done in 8 rivers from 5 regencies. Chemical factors tested in this research were oil, Ammonia, Fe, BOD, nitrate, nitrite, phosphate, and detergent. Physical factors involved temperature, pH, DO, TSS, and TDS. The result of chemical factor test showed that chemical compounds of water from 8 rivers contained Ammonia (0.36-0.43 ppm), oil (0-40 ppm) nitrate (0.0160.79 ppm), nitrite (0.0017-0.0038 ppm), Fe (0.051-7.24 ppm), phosphate (0-0.77 ppm), and detergent (0.260.479 ppm). Data of physical test showed that temperature range was 25C (at NPS) to 28C (at LKN). Conductivity range was 4.31 μs (at LKN) to 59.01 μs (at MRS), pH 7.99-8.7, TSS 13.89 ppm to 34.23 ppm, TDS 0.022 ppt to 0.039 ppt and DO concentration reached 6,32 (LKN) to 7,99 (ARM). The result can be concluded based on abiotic factor that 8 rivers are classified as good quality rivers.