The study was conducted on 400 fishes, which were divided into two groups. Each group included 200 fish of a large type and 200 fish of a small size, and the types are the Epiepbelus guaza , Epinephelus aeneus, Epinephelus castae , Scorpaena serofa and Mustelus ,the rate of infection in large fish was 3102% , 7000% in
E. guaza, 30% in E. aeneus, 20% in E. castae 17.5% in S. scrofa and 12.5% in M.mastelus, but the infection rate in small fish was 15.5%.