Plectranthias is a genus of ray-finned fish in the subfamily Anthiinae, part of the family Serranidae, the groupers and sea basses. They are found in the Atlantic, Indian and Pacific Ocean.

Anthias are members of the family Serranidae and make up the subfamily Anthiinae. The name Anthiidae is preoccupied by a subfamily of ground beetles in the family Carabidae created by Bonelli in 1813 and this grouping should be called the Anthiadinae. However, both the 5th Edition of Fishes of the World and Fishbase give the Serranid subfamily as "Anthiinae".