Acanthoplesiops

Acanthoplesiops
Scientific classification
Kingdom:	Animalia
Phylum:	Chordata
Class:	Actinopterygii
Order:	Perciformes
Family:	Plesiopidae
Genus:	Acanthoplesiops Regan, 1912

Acanthoplesiops is a genus of reef-dwelling fishes belonging to the family Plesiopidae. All species are very small, with the largest specimen recorded only reaching 27 mm standard length. They have several features which distinguish them from other plesiopids, the most obvious of which is the presence of one or two spines on the operculum.

There are currently 6 recognized species in this genus:

...
Wikipedia