Agung Setia Batubara, Anastasya Sorta Panggabean, Rahmatsyah Rahmatsyah, Rita Juliani, Syarifuddin Syarifuddin, Firman M. Nur, Ilham Zulfahmi
While introduced fish initially had a positive impact on the socio-economic aspects of society, they have recently threatened the biodiversity of native fish in Indonesia. Preventive efforts are needed by inventorying introduced fish traded in Medan Regency, as the origin of theentry of alien fish in North Sumatra, Indonesia. This research used a survey method conducted at 30 ornamental fish markets in the Medan Regencyarea from March to May 2024. The authors classified introduced fish based on conservation status, natural distribution zone, year of introduction, and invasive threats based on various databases and journals. Fish Invasiveness Screening Test (FIST) analysis was also carried out to assessthe risk level of the introduced fish. The results of the analysis show that there are 55 introduced fish species traded in Medan Regency, whichare classified into 46 genera, 29 families, and 14 orders. The orders Cichliformes and Cypriniformes had the highest numbers of species, followed by Characiformes, Siluriformes, Osteoglossiformes, Anabantiformes, Cyprinodontiformes, and others. There are 13 species of introduced fish that should be prohibited from circulation because they threaten aquatic ecology, including Amphilophus citrinellus, A. labiatus, Cichla ocellaris C. piquiti, Lepisosteus oculatus, L. osseus, Lates niloticus, Melanochromis auratus, Pterygoplichthys multiradiatus, P. pardalis, Pygocentrus nattereri, Semaprochilodus insignis, and Tetraodon duboisi. The results of the FIST analysis show that 21 species of fish represent a high risk o threat to aquatic ecosystems, followed by 13 species at moderate risk, and 21 species at low risk. © This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY SA) license
Department of Biology, Faculty of Mathematics and Natural Sciences, Universitas Negeri Medan, Medan, 20221, Indonesia; Department of Physics, Faculty of Mathematics and Natural Sciences, Universitas Negeri Medan, Medan, 20221, Indonesia; Research Centre for Biosystematics and Evolution, National Research and Innovation Agency (BRIN), Cibinong, 16911, Indonesia; Department of Fisheries Resources Utilisation, Faculty of Marine and Fisheries, Universitas Syiah Kuala, Banda Aceh, 23111, Indonesia
