Author: (Valenciennes, 1840)
FBname: Emerald parrotfish
Remark: Issue on validity of subspecies:  subspecies considered as valid in FB, elevated to species rank as <i>Nicholsina usta</i> (Valenciennes, 1840) in Eschmeyer (CofF ver. Mar. 2011: Ref. 86697).  Please send references, or more studies are needed.
Comments: Maximum depth from Ref. 52834.  Inhabits seagrass beds and open bottom, mostly in shallow water.  Larger adults live in deeper water.  Not commonly marketed for food (Ref. 52834).