Plectorhinchus, the sweetlips, is a genus of grunts found in fresh, brackish and salt waters. These fish have big, fleshy lips and tend to live on coral reefs in the Indo-Pacific in small groups or pairs. They will often associate with other fishes of similar species; several species of sweetlips sometimes swim together. They are usually seen in clusters in nooks and crannies or under overhangs. Sweetlips' colouring and patterning changes throughout their lives.