KEANEKARAGAMAN IKAN DI PERAIRAN MUARA BULUNGAN DAN PERAIRAN MUARA SESAYAP KALIMANTAN UTARA
Abstract Fish resources refer to abundant fish and other marine organisme with the inherent capacity for natural replenishment. A diverse range of fish species is captured using fishing gear known as Stownets. This study assessed the fish variety and catch rates in Muara Bulungan and Muara Sesayap, located in North Kalimantan. The investigation was conducted throughout the period spanninf from October to November of the year 2022. The research employed a quantitative descriptive methodology. The sampling procedure was conducted during the alternating periods of high and low tides in seawater. Samples of fish were obtained from the captures of Tugu fishing gear. A total of 30 distinct species were observed, classified into 3 phla, 7 classes, 16 orders, 18 families, and 29 genera. Gazza is the fish species exhibiting with the lowest abundance is scatophagous, comprising a mere 0,01% of the population. The recorded fish catch rates for the Muara Bulungan fishing are as follows: trip 1 yielded an approximate rate of 2,725 kg/h, trip 2 resulted in a rate of 1,089 kg/h, and trip3 exhibited flow rates for trip 1, trip 2, and trip 3 were 1,834 kg/h, 1,375 kg/h, and 2,581 kg/h , respectively.