On the base of these images, it is impossible to identify the species. Although I know Michael Hellweg as one of the best specialists in the United States, I remain skeptical about that identification. I received the first P. spec. Danau Rasau (the later gunawani)by Horst Linke who found and imported them privately to Germany. I bred them, they were rather easy to breed. The offspring fish were less conspicuous and more similar to bintan variants than the wildcaught fish. These were distinctly stout in their bodily appearance and specific in respect to the small coloured fringes of their unpaired fins, but later on I saw some other wild caught specimens in Linke’s tanks that were less clearly shaped and coloured this way. So I think it difficult to recognize gunawani without doubt from a few specimens only; I even am not convinced that it is a clear separate species. It seems so, but there is a rest of uncertainty even with wildcaught fish. And I am very skeptical with respect to commercially traded fish named like this, since I know of several doubtful examples: the exporters had used the newest and most interesting names in oder to make sure they sell the fish.
We definitely need much better photos, big and sharp in best light conditions to say more.