Abstract:
A total number of 60 Sergeant Major (Abudefduf saxatilis) fishes from the family
Pomacentridae were collected from Bidong Island and were diagnosed. Most all the
fishes were found to be infected by parasites. The ectoparasites were the isopod from
genus Rocinela sp. which were mainly found attached to the gill chamber meanwhile
monogenea (Pseudohaliotrema sp.) were found clinging to the gill filaments. Two
endoparasites were found which was the digenea (Fellodistomum sp.) and nematodes
( Cucullanus sp.) parasitize the intestine of the fishes. The prevalence was I 00% and
mean intensity of the parasites of Abudefduf saxatilis was 16.18. The morphological
characteristics of these parasites were described, illustrated and identified
taxonomically.
