Naso hexacanthus

Naso hexacanthus, commonly known as the sleek unicornfish, is a very large unicornfish which is only suitable for the largest home tanks and zoo's. Not much is known about their behaviour in aquaria, but likely it can be aggressive towards other fish, especially tangs and food competitors. It's one of the few Naso species not having a pronounced nose.

Like other unicornfish, it will eat zooplankton and even crabs, especially when adult, but it's important it can graze on algae/seaweed the entire day when it is still young, to ensure it will stay healthy. So feed flakes/pellets multiple times a day and make sure there is always seaweed available.