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Background Studies of parasite communities and patterns in the Antarctic are an important knowledge base with the potential to track shifts in ecological relations and study the effects of climate change on host–parasite systems. Endemic Nototheniinae is the dominant fish group found in Antarctic marine habitats. Through their intermediate position within the food web, Nototheniinae link lower to higher trophic levels and thereby also form an important component of parasite life cycles. The study was set out to gain insight into the parasite fauna of  Nototheniops larseni ,  N. nudifrons  and  Lepidonotothen squamifrons  (Nototheniinae) from Elephant Island (Antarctica). Methods Sampling was conducted at three locations around Elephant Island during the ANT-XXVIII/4 expedition of the research vessel Polarstern. The parasite fauna of three Nototheniine species was analysed, and findings were compared to previous parasitological and ecological research collated from a literature review. Results All host species shared the parasites  Neolebouria antarctica  (Digenea),  Corynosoma bullosum  (Acanthocephala) and  Pseudoterranova decipiens  E (Nematoda). Other parasite taxa were exclusive to one host species in this study.  Nototheniops nudifrons  was infected by  Ascarophis nototheniae  (Nematoda), occasional infections of  N. larseni  with  Echinorhynchus petrotschenkoi  (Acanthocephala) and  L. squamifrons  with  Elytrophalloides oatesi  (Digenea) and larval tetraphyllidean Cestoda were detected. Conclusion All examined fish species’ parasites were predominantly euryxenous regarding their fish hosts. The infection of  Lepidonotothen squamifrons  with  Lepidapedon garrardi  (Digenea) and  Nototheniops larseni  with  Echinorhynchus petrotschenkoi  represent new host records. Despite the challenges and limited opportunities for fishing in remote areas, future studies should continue sampling on a more regular basis and include a larger number of fish species and sampling sites within different habitats.

Parasites of Three Closely Related Antarctic Fish Species (Teleostei: Nototheniinae) from Elephant Island