The Rock Wrasse, Thalassoma amblycephalum, also known as the Blunthead Wrasse, is native to the waters around Fiji. The Rock Wrasse has a distinct head shape, dissimilar to most other wrasses - it is rounded and flat while still retaining the classic wrasse body shape. Coloration patterns vary with the Rock Wrasse depending on gender and age. The Rock Wrasse is best housed in a tank with a tightly secured lid, a soft sandy substrate, and plenty of rock work for the wrasse to hide. It is not suggested to keep two Rock Wrasses together in the same tank.  The Rock Wrasse is a unique species of wrasse due to its head shape and dramatic coloration changes as it matures.