Eucopia australis Dana 1852

are preyed upon by

• Global Biotic Interactions: Pogonophryne permitini Andriashev 1967 (Finespotted plunderfish)
• Global Biotic Interactions: Trematomus nicolai (Boulenger 1902) (Spotted notothen)
• Global Biotic Interactions: Pogonophryne scotti Regan 1914 (Saddleback plunderfish)
• Global Biotic Interactions: Trematomus loennbergii Regan 1913 (Deepwater notothen)
• Global Biotic Interactions: Aethotaxis mitopteryx De Witt 1962 (Longfin icedevil)

eat

• Global Biotic Interactions: Navicula glaciei
• Global Biotic Interactions: Thalassiosira australis
• Global Biotic Interactions: Proboscia alata
• Global Biotic Interactions: Terebraria kerguelensis E. O'Meara 1876
• Global Biotic Interactions: Corethron criophilum

prey on

• Global Biotic Interactions: Calanus propinquus Brady 1883
• Global Biotic Interactions: Limacina rangii (d'Orbigny 1835)
• Global Biotic Interactions: Clione limacina antarctica E. A. Smith 1902
• Global Biotic Interactions: Alacia belgicae
• Global Biotic Interactions: Calanoides acutus (Giesbrecht 1902)