Actinopterygii
Champsocephalus esox (Günther) ( Perciformes, Channichthyidae). SI: intestine. SD: adult. L: Tierra del Fuego Province: Beagle Channel ( 54°59’S, 66º45’W). R: Laskowski and Zdzitowiecki (2008, 2009).
Eleginops maclovinus (Cuvier) ( Perciformes, Eleginopsidae) ( type host). SI: intestine. SD: adult. L: Santa Cruz Province: Puerto Deseado; Tierra del Fuego Province: Thetis Bay, Aguirre Bay. R: Szidat (1950), Gosztonyi (1979).
Notocheirus hubbsi Clark ( Atheriniformes, Notocheiridae). SI: intestine. SD: unknown. L: Santa Cruz Province: Puerto Deseado ( 47º45’S, 65º55’W). R: Gosztonyi (1972).