Helcogramma nigra, the Rotuma triplefin, is a species of triplefin blenny in the genus Helcogramma.
[2] It was described by Jeffrey T. Williams and Jeffrey C. Howe in 2003.
[3] This species occurs in the western central Pacific Ocean where it has been recorded from Papua New Guinea, the Solomon Islands, Vanuatu and Rotuma.
[1]