They generally reach about 7.5 to 12.5 centimeters (3 to 5 inches) in length and height, and 1 to 2 centimetres (< 1 inch) in thickness, and are bright yellow in colour across their entire bodies. They have an arrow-like shape due to their dorsal and ventral fins being almost an extention to their bodies, and a long snout-like mouth used (As with other Tang's) to eat the algae off rocks and coral.