I have two potters a blue star and this leopard in the tank. I think the blue star is just trying to establish its dominance over the leopard. I would love to keep it but I think eventually the leopard will jump seeing as my tank is rimless.
I've been lucky with wrasses.....i have 3 leopards and 2 potters wrasses along with everything else that's thriving.
Except for the exquisite wrasse. For some reason they always die on me