LOL, If you find out let me know, hehehehe. There is talk that the males have longer gill spines, but im not sure. Mine has really long spines, so im gonna say its a male. Good luck
Leopard Man: It all depends on the fish. Ive seen flames be great in a reef with all corals and clams, then others will eat everything. That goes will all angels. Someone on here told me that is it better to get the dwarf angels small, like around 1-1 1/2 inches long. At that age the fish have not found a taste for corals. I cant comfirm that but it does sound right. If you get a younger fish and get it use to living off dry foods, they will less likely try corals because they want see them as a food source. Hope this helps,
Michael