Another consideration to ponder is food choices. As juveniles, Hepatus tangs are nearly strict planktivores. However, as they age into adulthood, some individuals may begin to supplement their diet with various algae such as Caulerpa. This diet should be mimicked in the home aquarium. Large portions of the diet should consist of Mysis shrimp, and as the fish ages you should begin to supplement the diet with various dried algae such as nori. Your fish may or may not take to eating algae. Most any food presented in the water column will eventually be taken, including enriched brine, and flake. However, the staple of the diet should always remain Mysis or plankton. My personal favorite is freeze-dried plankton soaked in any of the widely available food vitamin supplements. The diet is an important consideration, as Paracanthurus hepatus are extremely prone to Head and Lateral Line Erosion (HLLE). Though the root cause of HLLE has yet to be determined, most researchers agree that an insufficient diet plays a large role. Many times when the diet was improved, the condition reversed and cured itself.