Blue Tang is an planktivore during the Juvenile stage, and Omnivorous in the adult stage. Prone to easily contracting ich and is very susceptible to lateral line and fine erosion - especially when kept in smaller aquariums. Even the smallest sizes of the Blue Hippo Tang require large amounts of swimming room and should be in a tank no less than 100 gallons. Can be shy when first introduced to the aquarium, provide branching corals or other shelter sites. Will school as juveniles and tend to be much hardier when kept this way, they will grow to fight with other adult blue tangs.