This is a general question:
We had imports in some countries telling us the fish to be sold would be P.gunawani. We have serious doubts about this. Some pictures might have shown gunawani, but most others were definitely not this species.
Are there new informations or at least better photos showing us real gunawani among those many bintan-like forms? Did you ask the traders for the sources of their naming?
If there is no proof of the contrary, we take gunawani not to be in our aquarium-stocks presently.