Smooth trunkfish

Trunkfish are great fun to watch, as they move around the reef. They are members of the boxfish family, named for their bony box-like structure. The generally swim fairly slowly using only their smaller fins. Today I encountered a group of 4 smooth trunkfish that were getting cleaned by a juvenile Spanish hogfish (the blue and yellow fish in the photos). The biggest trunkfish was only about 6 inches long. It was nice to see so many of them at once. And I particularly appreciated the color changes that they demonstrated.