Enneapterygius tutuilae, known commonly as the high-hat triplefin or rosy cheek threefin, is a species of triplefin blenny in the genus Enneapterygius.

[2] It was described by David Starr Jordan and Alvin Seale in 1906.

[3] This species occurs from the eastern Indian Ocean around the Cocos (Keeling) Islands east to French Polynesia.

[1] Its specific name refers to the Samoan island of Tutuila where the type was collected.

[4]