Enneapterygius rufopileus, the blackcheek threefin, Lord Howe black-head triplefin or redcap triplefin, is a species of triplefin blenny in the genus Enneapterygius.

[2] It was described by Edgar Ravenswood Waite in 1904.

[3] It occurs in the western Pacific Ocean off Lord Howe Island, Norfolk Island, New Caledonia, Fiji and Tonga.

[1]