The adult queen angelfish overall body color can be described as blue to blue-green with yellow rims on its scales. Their pectoral and ventral fins are also yellow but their lips and the edges of their dorsal finsand anal fins are dark blue. Queen angelfish are also known to have blue markings around each gill cover. Juveniles have dark blue bodies with yellow lips, gills, and tail and vertical bars ranging in color from light blue to white.
The colors of the juvenile fish help them to blend in with the reefs. The queen angelfish may live up to 15 years in the wild and reach up to 45 centimeters (17 inches) in length. Queen angelfish are about three and a half pounds.