I have 2, one I collected in Nov of 06 and the other last Oct. They live in a FOWLR and a few motile inverts. They eat anything I feed, frozen and dry. They are one of the easiest butterfly I have ever kept, I have them with flame wrasse, disappearing wrasse several sp of pygmy angels, atlantic longnose butterfly and lightning wrasse. My water parameters are all within normal range, but I have high nitrates. Maintenence is normal, water changes and rinsing the filter pads. Lighting is flourescent only. Not sure what else I can tell you, but if you have specific questions, post them and if I can answer I will.