O well, two further strange fish!
The second (photo by Michael Lo) is a clear male deissneri, only the black filament is missing (but this could happen). The fish has been photographed in a fearful mood, but all important markers are to be seen.
But the first and the second? Both are males but no defnite bintan-specimen! Again there are intermediate markers to deissneri to be seen. The third fish seems to be rather young.
Well, I do not know what they are! We should know whether they are aqiarium bred or caught in the natural habitats (on Bangka?). The second fish, the deissneri, is probably caught there, because M. Lo does not breed licorice gouramis but visits their habitats. But the first and the the third? Without knowing this we should prevent us from speculating.
Very interesting individuals, Sverting!