Abstract
Fish parasites are considered as a part of marine biodiversity in worldwide, it is very important to know the native and Non indigenous species in Libyan waters, this study was conducted to investigated fish parasites in the native barracuda fishes. A total of 52 and 50 individuals of S. viridensis and S. sphyraena respectively, were collected from fishermen in the western coast of Libya. A total of 165 individual of parasites were identified to the species level (except two). The rates of infection in S. viridensis and S. sphyraena, was 32% and 48% respectively. The highest prevalence of infection was 94.2% and 39.2% for the Scolex pleuronectis in both fishes, while the lowest prevalence was 1.96 %, the Vargula sp. in S. sphyraena. this study in the Mediterranean is very important to provide a contribution to fill the gap of knowledge on the biological and ecological trait of marine fishes