BIODIVERSITAS ISSN: 1412-033X Volume 21, Number 6, June 2020 E-ISSN: 2085-4722 Pages: 2344-2352 DOI: 10.13057/biodiv/d210602 Biodiversity of nekton in Batangtoru River and its tributaries in North Sumatra, Indonesia DESRITA1,♥, AHMAD MUHTADI1, RUSDI LEIDONALD1, RINA D’RITA SIBAGARIANG2, NURFADILLAH3 1Department of Aquatic Resources Management, Faculty of Agriculture, Universitas Sumatera Utara. Jl. Prof A. Sofyan No. 3, Medan 20155, North Sumatra, Indonesia. Tel./fax.: +62-61-8213236, email:
[email protected] 2Department of Aquatic Resources Management, Faculty of Fisheries and Marine Science, Universitas Riau. Jl. HR Soebrantas Km 12.5, Kampus Binawidya, Pekanbaru 28293, Riau, Indonesia 3Faculty of Marine Science and Fisheries, Universitas Syiah Kuala. Jl. Putroe Phang, Darussalam, Syiah Kuala, Banda Aceh 23111, Aceh, Indonesia Manuscript received: 26 February 2020. Revision accepted: 3 May 2020. Abstract. Desrita, Muhtadi A, Leidonald R, Sibagaring RD, Nurfadillah 2020. Biodiversity of nekton in Batangtoru River and its tributaries in North Sumatra, Indonesia. Biodiversitas 21: 2344-2352. 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.