Menaethius monoceros

are preyed upon by

• Global Biotic Interactions: Anemonia natalensis Carlgren 1938
• Global Biotic Interactions: Charybdis natator
• Global Biotic Interactions: Thalamita crenata

eat

• Global Biotic Interactions: Dictyosphaeria cavernosa
• Global Biotic Interactions: Jania intermedia (Kützing) P. C. Silva 1996
• Global Biotic Interactions: Osmundaria melvillii (J. Agardh) R. E. Norris 1991
• Global Biotic Interactions: Pseudocodium devriesii
• Global Biotic Interactions: Padina boryana

have host

• Global Biotic Interactions: Caracanthus maculatus (Gray 1831) (Spotted coral croucher)