Digenetic Trematodes (Acanthocolpidae Lühe, 1906: Genus Stephanostomum Looss, 1899) From Red Sea Fishes, Yemen Coast

155 red sea fish, belonging to 3 species (60 thunnus tanggol ; 80 abalistes stellaris and 15 carangoides bajad), 25- 92 cm total length, were examined for digenetic trematodes (acanthocolpidae lühe, 1906).two species of stephanostomum looss, 1899 are described. they are the first records of these species from the red sea ,yemen. stephanostomum australis manter,1954, from fishes of families: scombridae and balistidae (thunnus tanggol and abalistes stellaris) and unidentified species, stephanostomum sp. from carangidae (carangoides bajad).