I think you'll do fine with a Desjardini, particularly since the Regal was there first and the sailfin will likely still be a baby. Mine has grown up now, and is definitely the boss, but he really doesn't pick on the other tangs. Occasionally he'll have a little tiff with the foxface, but the foxface knows how to defend himself just fine. (envision a tang swimming away puckering his lips after getting a taste of spiney fins)
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210g reef
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