They can and will fight with their species and other tangs, seriously damaging other similar appearing fishes, even in tanks of hundreds of gallons. Should you be determined to keep more than one Zebrasoma or conspecifics together, do purchase them as a group, from the same dealer s tank, and introduce them all at once. Per tang territoriality, these fishes should be placed last, affording their tankmates time to assert space for themselves. I differ with other authors as to the relative fierceness of Zebrasomas with other fishes. But I would be remiss to not mention that, as usual, there is no substitute for careful observation.
Prolonged battles demand immediate separation of warring parties, or loss of at least one.
These fishes, as all tangs, are best placed near last to ensure aging and stability of the system. Given plenty of room and hiding spaces your Sailfin tang should not be overly intimidated by any but the worst bully tankmates. Measure grouper, moray and lionfish mouths twice before introducing Zebrasoma. Spawning by Zebrasoma species occurs by pairs and schools, with two or more fishes swimming rapidly toward the surface releasing their gametes. Planktonic larvae drift about via currents for weeks to a few months, with good fortune settling about a propitious reef.