I have not heard much on the Lemonpeel but I have heard on the Flame angel that you want it to be the last fish added to the tank to avoid it possibly becoming agressive, or even dominant towards others that may be introduced after it. I have heard that it is pretty safe with reefs, and that it is one of the few that is safe. I see them in reef tanks all the time, actually one of hte most common ones I have seen housed with corals. Good luck. I will let you know if I find anything else.