Tangs are tangs, there's no guarantee what will or won't have problems, especially in smaller tanks (if you actually meant 75L and not gallons), but Zebrasoma are more likely to have beef with other Zebrasoma compared to other genera of tangs. The more different the two are, the better. Really, anything on the nicer side of Acanthurus, Ctenochaetus, Naso, a hippo, your choice. If you avoid the notoriously bad Acanthurus (think Sohal, Lineatus, etc.) I'd say you have an equal chance of them working out.
