Jurnal Biodjati 4(1):58-67, May 2019 http://journal.uinsgd.ac.id/index.php/biodjati Received : March 08, 2019 Accepted : April 05, 2019 Abstract. Information related to the prevalence and intensity of par- asites in an aquatic environment is crucial as preventive and respon- sive efforts to manage aquatic resources, especially for fsh farming purposes. Up to now, information related to the prevalence and in- tensity of ectoparasites on catfsh (Clarias gariepinus) from aqua- culture ponds in Aceh Besar District is rare. This study aims to in- vestigate the prevalence, intensity, and dominance of ectoparasites on catfsh from aquaculture ponds in Aceh Besar district. The total of 200 catfsh from four research stations at Sibreh, Kareung, Lam- baro, and Limpok was observed in this study. The ectoparasites ob- servation was focused on the skin, fns, and gill of the catfsh. The observation parameter consists of prevalence, intensity, domination, length-weight relationship, and condition factor. Identifcation result showed that there were four types of ectoparasites infect the catfsh in the aquaculture ponds in Aceh Besar District i.e Trichodina sp., Gyrodactylus sp., Dactylogyrus sp. and Ichthyopthyrius multifli- is. Station 3 (Lambaro) had the highest prevalence and intensity, which were 64% and 5.87 ectoparasites/fsh, respectively. Infected catfsh tended to have a lower weight growth than healthy catfsh. Keywords: condition factor, dominance, intensity, length-weight rela- tionship, prevalence DOI: 10.15575/biodjati.v4i1.4328 Citation Fautama, F. N., Zulfahmi, I., Muliari & Anas, A. A. (2019). Prevalence and Intesity of Ectopar- asites on Clarias gariepinus from Aquaqulture Pond in Aceh Besar District, Indonesia. Jurnal Biodjati, 4(1), 58-67 PREVALENCE AND INTENSITY OF ECTOPARASITES ON Clarias gariepinus FROM AQUACULTURE POND IN ACEH BESAR DISTRICT, INDONESIA Fitria Nelda Fautama 1 , Ilham Zulfahmi 1,2* , Muliari 3 , Adian Aristia Anas 4 1 Center for Aquatic Research and Conservation, Universitas Islam Negeri Ar-Raniry Banda Aceh 23111 2 Department of Biology, Faculty of Science and Technology, Universitas Islam Negeri Ar-Raniry Banda Aceh 23111 3 Department of Aquaculture, Faculty of Agriculture, Universitas Almuslim, Bireuen 24261 4 Department of Environmental Engineering, Faculty of Science and Technology, Universitas Islam Negeri Ar-Raniry, Banda Aceh 23111 e-mail: 1 neldafautama@gmail.com *1,2 ilhamgravel@yahoo.com 3 muliari86@gmail.com 4 adian1087@gmail.com INTRODUCTION Catfsh (Clarias gariepinus) is one of the important consumption fsh for the people of Indonesia (Aidil et al., 2016). In addition to its high economic value (reach to Rp. 16,200/ kg), catfsh also contains essential nutrition for the human body (Jaja et al., 2013; Suwan- di et al., 2011). Apriyana (2014) reported that catfsh contain 78.5 g moisture, 90 g calories, 18.7 g Protein, 1.1 g lipid, 15 g calcium (Ca), 260 g phosphor (P), 2 g zinc (Fe), 150 g natri- um, 0.10 g thiamin, 0.05 g ribofavin and 2.0 g per 100 g niacin. e-ISSN : 2541-4208 p-ISSN : 2548-1606 *Corresponding author