The blueside wrasse (Cirrhilabrus cyanopleura) is a species of wrasse native to the eastern Indian Ocean and the western Pacific Ocean. It is found on reefs in schools swimming 1to above the bottom. It occurs at depths from 2to, most often between 5and. This species can reach a standard length of 15cm (06inches). It can be found in the aquarium trade.
It feeds on zooplankton. It may be relatively common but declining because of threats: blast fishing, sedimentation, pollution, collection for the aquarium trade and habitat loss of shallow reefs.