Plesiops coeruleolineatus, the crimsontip longfin or coral devil,[4] is a species of fish in the family Plesiopidae.

Although colours vary, it is generally has a black or brown body, with two dark stripes behind the eye.

The dorsal spines are tipped with orange or red, bordered below with a line white.

[1] It has been recorded in such specific locations as Cargados Carajos, Comores, Eritrea, Kenya, Madagascar, Mauritius, Mozambique, Réunion, and the Seychelles.

It emerges at night, venturing into the open to feed on fish, gastropods, and small crustaceans.