Wikipedia
Paraplesiops
Paraplesiops is a genus containing five largely allopatric species of fishes in the longfin, or roundhead, family Plesiopidae, commonly known as blue devils, bluedevils or blue devilfish because of their colouration. The genus is most similar to the tropical genera Plesiops and Fraudella. It is restricted to subtropical and temperate rocky and coral reefs in Australian waters. Its species are mostly cryptic, occurring in submarine caves, crevices and under rocky ledges.