Actinopyga miliaris, commonly known as the hairy blackfish,[3] is a species of sea cucumber in the family Holothuriidae.

The anus is surrounded by five strong, triangular anal teeth, and Cuvierian tubules seen in other sea cucumbers are absent.

Its range extends from as far east as the Red Sea to as far west as French Polynesia, excluding the Persian Gulf and Hawaii.

It can be found in depths of 0 to 20 m (0 to 70 ft), and is abundant on seagrass beds and rubble reef flats.

Because it is easy to collect by hand, it is over-exploited in many areas, and the International Union for Conservation of Nature estimates that populations have declined by 60 to 90% over about 50% of its range.