strawberry pseudochromis question

[jhj0112]

Hi,

I have a biocube 14 with a pair of false purc clownfish, shrimp goby and shrimp pair, a perppermint shrimp and cleaner shrimp..

I added a strawberry pseudochromis( I guess it is also called purple dottyback(?) ) 2 week ago.

He has been fine and not bothering any fish/shrimps but I read that this fish will eventually turn into a devil and kill pretty much anything in the tank including clownfish...

what's your experience on this fish? should I just return to LFS before it gets nasty??