The Drysdale hardyhead (Craterocephalus helenae) is a species of fish in the family Atherinidae endemic to the Drysdale River in the Kimberley region of Australia.

[1] It is listed as near threatened on the IUCN Red List and rare under the Australian EPBC Act 1999.

[2] The specific name honours Ivantsoff's wife, Helena.

[3] Little is known about the biology or ecology of this species, but it is an omnivore which feeds on aquatic insects, small crustaceans and algae.

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