Alacia hettacra

are preyed upon by

• Global Biotic Interactions: Gymnodraco acuticeps Boulenger 1902 (Ploughfish)
• Global Biotic Interactions: Gymnoscopelus opisthopterus Fraser-Brunner 1949
• Global Biotic Interactions: Artedidraco orianae Regan 1914
• Global Biotic Interactions: Callianira antarctica Chun 1897
• Global Biotic Interactions: Protomyctophum bolini (Fraser-Brunner 1949) (Bolin’s lanternfish)

eat

• Global Biotic Interactions: Antarctomysis ohlinii Hansen 1908
• Global Biotic Interactions: Rhizosolenia antennata (Ehrenberg 1844) Brown 1920
• Global Biotic Interactions: Thalassiosira gravida
• Global Biotic Interactions: Thalassiosira expecta
• Global Biotic Interactions: Fragilariopsis obliquecostata (van Heurck) Heiden 1928

prey on

• Global Biotic Interactions: Amphidinium hadai Balech 1976