Body compressed, its width 3.3-4 in depth (Ref. 37816). Normally yellow, but sometimes nearly all black and juveniles take-on colors of the local venomous Meiacanthus blennies that are yellow or grey (Ref. 48635).

Description: Characterized by having mainly ctenoid body scales; relatively deep bodied; coarsely serrate preopercle margin; rounded caudal fin; elongated pelvic fins (Ref. 90102).