2K views · 145 reactions | 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 surgeonfish. Powder Blue Tang is found in tropical waters from the Indian Ocean. The species inhabits shallow and clear coastal waters always associated with a reef. It prefers flat top reefs and areas along seaward slopes. | Cobalt Aquatics | Facebook