Newnesia antarctica E. A. Smith 1902

are preyed upon by

• Global Biotic Interactions: Colossendeis scotti Calman 1915
• Global Biotic Interactions: Pentanymphon antarcticum Hodgson 1904
• Global Biotic Interactions: Trematomus nicolai (Boulenger 1902) (Spotted notothen)
• Global Biotic Interactions: Trematomus loennbergii Regan 1913 (Deepwater notothen)
• Global Biotic Interactions: Harmothoe spinosa Kinberg 1856
• Global Biotic Interactions: Glyptonotus antarcticus Eights 1852 (Giant Antarctic isopod)
• Global Biotic Interactions: Labidiaster annulatus Sladen 1889
• Global Biotic Interactions: Ammothea carolinensis Leach 1814
• Global Biotic Interactions: Austrocidaris canaliculata (A. Agassiz 1863)
• Global Biotic Interactions: Diplasterias brucei (Koehler 1907)
• Global Biotic Interactions: Harpagifer antarcticus Nybelin 1947 (Antarctic spiny plunderfish)
• Global Biotic Interactions: Antarctinoe spicoides (Hartmann-Schröder 1986)
• Global Biotic Interactions: Notocrangon antarcticus (Pfeffer 1887)
• Global Biotic Interactions: Nymphon hiemale Hodgson 1907
• Global Biotic Interactions: Odontaster validus Koehler 1906 (Sea star)
• Global Biotic Interactions: Macroptychaster accrescens (Koehler 1920)
• Global Biotic Interactions: Chorismus antarcticus (Pfeffer 1887)
• Global Biotic Interactions: Trematomus bernacchii Boulenger 1902 (Emerald rockcod)
• Global Biotic Interactions: Trematomus pennellii Regan 1914 (Sharp-spined notothen)
• Global Biotic Interactions: Dolloidraco longedorsalis Roule 1913
• Global Biotic Interactions: Artedidraco lonnbergi Roule 1913
• Global Biotic Interactions: Notothenia coriiceps Richardson 1844 (Black rockcod)
• Global Biotic Interactions: Trematomus lepidorhinus (Pappenheim 1911) (Slender scalyhead)
• Global Biotic Interactions: Trematomus scotti (Boulenger 1907) (Blackfin notothen)
• Global Biotic Interactions: Ophiosparte gigas Koehler 1922