Survey of Protozoan Parasites in the Mediterranean Horse Macherel (Trachurus mediterraneus) from Zliten Coast Libya

This study was conducted to estimate the prevalence, mean abundance, and intensity of common protozoa infection on Mediterranean horse macherel (Trachurus mediterraneus) from Zliten coast, Libya. A total 32 specimens species were collected randomly. The fish transported immediately alive laboratory in Department Fish Biology Culture, College Marine Resources, Asmarya University, where they maintained well aerated glass aquaria. gills, fins, skin examined for ectoparasitic using a light microscope. Among fish, high desnsity parasitic infectious internal organ observed kideny (0.375), liver (0.5), blood spleen (0.25), respectively. Seven protozoan namely Haemogregarina spp., Trypanosoma Cryptopia Microsporidia Henneguya Thelohania spp. Ichthyophthirius multifiliis identified coast.