McCulloch's hardyhead (Atherion maccullochi), first described by Jordan & Hubbs, 1919 is a tiny fish in the family Atherionidae (order Atheriniformes). Adults typically reach 4.90 cm in maximum length. It inhabits marine coastal and open-ocean environments. It occurs in Subtropical waters. It is broadly omnivorous, taking invertebrates, plant matter, and detritus. The species schools in loose to tight aggregations.
Physical description for McCulloch's hardyhead is currently being compiled.
Behavioural data for McCulloch's hardyhead is currently being reviewed.
Marine; reef-associated. Subtropical Southwest Pacific: Australia.
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