p. 151 - 156 CONTRIBUTION A LA CONNAISSANCE DES PARASITES DES POISSONS DE LA LAGUNE SINOE Tania Zaharia et Elena Dumitrescu Institut Roumain de Recherches Marines Constanta Abstract This paper presents the results of the researches carried out during summer of 1992 on the parasite fauna of the main fish species in Sinoe lagoon. 15 species of parasites (5 ectoparasites and 10 endoparasites) belonging to three file (Protozoa, Platheminthes and Nemathelminthes) have been made evident. The strongest and most dangerous parasitoses have been caused by the monogenus Dactylogyrus vastator Nybelin, 1924 and Trematoda Diplostomum spataceum (Rud., 1819). The most infestited with parasites was the pike perch Stizostedion lucioperca Linnaeus, 1758 (six species of parasites), followed by the carp Cyprinus carpio Linnaeus, 1758 (four species of parasites).