Harlequin Grouper - Cephalopolis polleni

''Cephalopholis polleni'', the harlequin hind, harlequin grouper, harlequin cod, harlequin rockcod or blue-lined grouper, is a species of marine ray-finned fish, a grouper from the subfamily Epinephelinae which is in the family Serranidae which also includes the anthias and sea basses. This fish occurs around offshore islands in the Indo-Pacific region. It occasionally makes its way into the aquarium trade.