Desrita, Ahmad Muhtadi, Rusdi Leidonald, Rina D’Rita Sibagariang, Nurfadillah
Batangtoru River which flows from the Tapanuli highlands (i.e., Sipirok, Tarutung, Siborong-borong, and Silangit) to the southwestern Indian Ocean is an important habitat for aquatic organisms in the western region of North Sumatra. This research was done to provide basic data on biodiversity of aquatic organisms in Indonesia, especially North Sumatra. The study was conducted in July-August 2019. Nekton was captured using backpack electrofishing units (12 volts and 9 Amperes), traps, nets, and bamboo trap. This study found 68 nekton species, consisting of fish (57 species), crab (3), shrimp (6), lobster (1), and 1 freshwater turtle (1). In general, nekton found in the Batangtoru River and its tributaries are native and economically valuable fish (Tor and eel), including the newly discovered species, which was, Hemibagrus caveatus. Invasive fish found consisted of 6 species, i.e., Cyprinus carpio, Oreochromis mossambicus, Oreochromis niloticus, Xiphophorus helleri, Hypostomus plecostomus, and Trichogaster pectoralis. The only invasive crustacean found was freshwater crayfish (Cherax quadricarinatus). © 2020, Society for Indonesian Biodiversity. All rights reserved.
Department of Aquatic Resources Management, Faculty of Agriculture, Universitas Sumatera Utara, Jl. Prof A. Sofyan No. 3, Medan, 20155, North Sumatra, Indonesia; Department of Aquatic Resources Management, Faculty of Fisheries and Marine Science, Universitas Riau, Jl. HR Soebrantas Km 12.5, Kampus Binawidya, Pekanbaru, 28293, Riau, Indonesia; Faculty of Marine Science and Fisheries, Universitas Syiah Kuala, Jl. Putroe Phang, Darussalam, Syiah Kuala, Banda Aceh, 23111, Aceh, Indonesia
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