Important parasites of freshwater fish in Thailand and neighboring countries

Abstract

Snakehead fish (Chana striata) from Thailand and Cambodia were sampled for parasitological study. The project was carried out from August 2003 to January 2004 twice a month. The results showed that there were 22 genera from 8 parasitic groups found externally and internally. The gill monogenean Trianchoratus pahangensis was found to be a dominant species, with in high degree of prevalence and intensity. Internal parasites from Cambodian fish samples, particularly Pallisentis nagpurensis (Acanthocephala), were observed in considerably greater abundance than those of Thai samples. Some parasite species, however, were common between the two sampling sites.