Do you have a picture of the pyroferus? They aren’t very commonI agree with what was stated above regarding the Naso... mine also seems like Switzerland. Nobody messes with her and she doesn't mess with anybody else. This was true even when she was the smallest tang... and now she's just about the largest. The lieutenant tang got a bit more aggressive as he got bigger... he's a beefcake now at ~8" long and over 1" thick. He will occasionally give chase to the pyroferus tang (probably the least aggressive) tang but it's all for show. The scopas tang was a very aggressive tang when it was the same size as the other tangs. They have since outpaced him so he is pretty cool now. I've got a two spot bristletooth tang that will be added once he puts on a little more size so I'm eager to see how it will slot in. Only concerned with the scopas at this point.
Naso - N/A just feed me
lieutenant - occasional dominant show
scopas - will probably chase newcomer
pyroferus - beautiful and not aggressive
two spot bristletooth - wildcard, lives with humu and assassi triggers...