Blue Hepatus Tang - (Paracanthurus hepatus) - (also known as the Hippo Tang) Next to the Yellow tang, probably one of the most recognized marine fish. They are now in season and small's will soon be mediums. This fish requires moderate care. Now is the time to add one to your existing marine aquarium. Don't know where to find one? Go to the Contact Page on our website and we will do our best to find you a retailer in your area.