Abstract
This study was aimed to identify some parasitic helminths (nematode and acanthocephalan) infecting Mullus surmuletusfrom the coast of the city of Al-Khums, Libya, and studying the relationship between the prevalence of some parasitic helminths and the variables of sex, body weight, and body length of M. surmuletus. One hundred and twenty three samples of M. surmuletuswere collected randomly from ALkums cost during the period from April 2022 to May 2023. The weight and length of all fish were measured, and each fish was opened up dorso-ventrally. The sex of the examined fish was determined, and parasites were collected. The results revealed that four species of parasitic helminths were detected during the examination, three nematodes sp. (Anisakissp. larva, Contracaecumsp. larva and Hysterothylacium adecipiens) and one species of Acanthocephalan (Echinorhynchus gadi). The result showed that the most common helminths with the highest infection rate were Anisakissp. larva at 39.29%, followed by H. adecipiensat 21.05%, Contracaecum sp. larva at 28.58%, and E. gadiat 18.19%, respectively. The results of this study add information about some parasitic helminths that infect fish in the Libyan coast. This information, along with other studies, will contribute to understanding the spread of parasitic helminths and their impact on fish.