The blackfin triplefin (Helcogramma fuscopinna) is a species of triplefin blenny in the genus Helcogramma. It was described by Wouter Holleman in 1982. This species occurs between 0mand50mm (00feetand160feetm) in the western Indian Ocean along the eastern coast of Africa from KwaZulu Natal to northern Kenya and east to the Maldives, living on rock surfaces and beneath ledges.