you can put several tangs, you do have to remember though that they each need their space. Don't mix species such as powder brown with powder blue (both acanthuras), and also make sure you put the less territorial"aggressive" in first with the more aggressive later.
Even doing the less aggressive p hepatis then more aggressive z flavences later, the z flavences harrassed the hepetus for a while. ONe trick with them is to overcrowd them, this spreads their aggression, but it also does terror to your
biological filtration.
Putting them at same time help with some, but you also have to consider if your bio can withstand that addition without spiking ammonia and nitrite too bad, also in a QT tank, usually aren't large enough for 2 tangs to get along even for a few days.
Loverotties, I thought the "lipstick" was a Naso literatus? if so it and a acanthuras leucosternum, i don't see a great resemblance?
NOW Planning 150g+ 
