Cage-cultured sutchi catfish Pangasius hypophthalmus (Sauvage, 1878), a favourite food fish in Southeast Asia, proved to be infected by 6 myxozoan species. Three species belonged to the genus Hennegoides (H. berlandi, H. malayensis, and H. pangasii), 1 to Henneguya (H. shariffi) and 2 to Myxobolus (M. baskai, and M. pangasii). Five myxozoans infected the gills and 1 was found on the spleen. Myx...

A microsporidian infection due to Microspolidiun~ arthun.n sp., has been observed in Pangasius sutchi from South-East Asia. The parasite forms uninucleate spores averaging 3.1 X 2 1 pm, variable in shape, mostly rounded pyriform but often curved. The exospore has a pattern of mosaic-like small fields. Developmental stages were not observed. In heavy infections, large parasite masses destroyed p...