The Powder Blue Tang, Acanthurus
leucosternon, is a marine tropical fish belonging to the family Acanthuridae, or
surgeonfishes. Its common names are powder blue tang and powderblue
fish can reach an average size of 23 cm in length. The body has an oval shape
and is compressed laterally. Like other surgeonfishes, Acanthurus leucosternon
swims with its pectoral fins. The caudal fin has a crescent shape. The fish has
a "surgeon's scalpel," an erected part of the spine located at the
base of the tail. The mouth is small and pointed in a beak-like manner with
tiny and sharp teeth for reaching narrow spaces of food.
diet consists of meaty foods, as well as herbivorous marine seaweed and algae.