Klunzinger's wrasse (Thalassoma rueppellii), also known as Rüppell's wrasse, is a species of ray-finned fish, a wrasse from the family Labridae which is endemic to the Red Sea. It inhabits the margins and seaward slopes of reefs at depths from 1to. It can reach 20cm (10inches) in total length. This species can be found in the aquarium trade.