Agung Setia Batubara, Rahmatsyah Rahmatsyah, Rita Juliani, Syarifuddin Syarifuddin, Akbar Fadhlurrahman Sufi, Tiara Rizka Febriza
Four-finger threadfin (Eleutheronema tetradactylum) has been over-exploited by fishing activities. The IUCN Red List of Threatened Species (Motomura et al 2015) issues the threat level for this species into the endangered category. This indicates that this species needs attention due to significant population decline in recent decades. The fish conservation efforts need to be carried out through data analysis on fish stocks in the wild. This study aims to carry out a stock assessment of E. tetradactylum through the length-weight relationship (LWR) and fish condition factors analysis approach. The research was conducted at four locations, three locations in North Sumatra Province (Tanung Balai, Bagan Serdang, and Pangkalan Brandan) and one location in Riau Province (Bagansipapiapi), Indonesia from June 2022 to July 2023. Fish sampling was carried out at the fish landing site (TPI) where the fish was found. The results of the analysis showed that the fish growth pattern was allometric negative in three locations, namely Tanjung Balai, Bagan Serdang, and Pangkalan Brandan with values of 2.84, 2.58, and 2.89, while the fish growth pattern in Bagansiapiapi tended to be isometric (2.99). The highest average size of E. tetradactylum caught was at Bagan Serdang station reaching 196.39 mm, followed by Tanjung Balai station (182.68 mm), Pangkalan Brandan station (149.57 mm), and Bagansiapiapi station (134.75 mm). However, the average size of the fish caught is not yet suitable for catching, as indicated by the size of immature fish (TL<250 mm). © 2024, null. All rights reserved.
Department of Biology, Faculty of Mathematics and Natural Sciences, Universitas Negeri Medan, Medan, Indonesia; Department of Physics, Faculty of Mathematics and Natural Sciences, Universitas Negeri Medan, Medan, Indonesia
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