Gymnocranius

Gymnocranius is a genus of marine ray-finned fishes belonging to the family Lethrinidae, the emperors and emperor breams. These fishes are found in the Indian Ocean and the western Pacific Ocean.

==Taxonomy== Gymnocranius was first proposed as a monospecific genus by the German zoologist Carl Benjamin Klunzinger in 1870 with Dentex rivulatus as its only species. Dentex rivulatus had been described by Eduard Rüppell in 1838 with its type locality given as Jeddah but this has subsequently been found to be a synonym of Cantharus grandoculis described in 1830 by Achille Valenciennes from the Seychelles. Some authors place this genus in the subfamily Monotaxinae but the 5th edition of Fishes of the World does not recognise the subfamilies traditionally accepted within the family Lethrinidae as valid. The family Lethrinidae is classified by the 5th edition of Fishes of the World as belonging to the order Spariformes.