Desjardinii Tang (Zebrasoma desjardinii). This fish has lived in an aquarium for over fifteen years! At ten to eleven inches, it is ruler of our display. In this photo, the Cleaner Wrasse pair are enjoying the morning clean-up. Each morning the fish line up at the cleaning station, impatiently waiting for the Cleaner Wrasse inspection. One can easily see the hierarchy in the community at cleaning time. The most dominant fish are first in line.