Grimothea gregaria

are eaten by

• Global Biotic Interactions: Schroederichthys bivius (Müller & Henle 1838) (قِرش قِطّ أبيض)
• Global Biotic Interactions: Sebastes capensis (Gmelin 1789)
• Global Biotic Interactions: Zearaja chilensis (Guichenot 1848)

are preyed upon by

• Global Biotic Interactions: Eleginops maclovinus (Cuvier 1830)
• Global Biotic Interactions: Discopyge tschudii Heckel 1846
• Global Biotic Interactions: Xystreurys rasile (Jordan 1891)
• Global Biotic Interactions: Galeorhinus galeus (Linnaeus 1758) (جلاد كلبي)
• Global Biotic Interactions: Pseudopercis semifasciata (Cuvier 1829)

prey on

• Global Biotic Interactions: Pleoticus muelleri (Spence Bate 1888)