You cannot judge by those photos – most of females, few of males – the species. It’s simpy impossible even for experts. The fish have been photographed in unfavourable conditions, they are frightened and do not show the colours we need to say which is which.
P. allani is nearly impossible. They come from only a few locations on Sarawak and have never been traded since about more than fifteen years. We had a few private imports only of very few animals. The breeding success was limited. They seem to be rare now in Sarawak (read the report of Chr. Hinz in our Asian forum, who visited the locations some weeks ago. The best is completely destroyed; there is a rice-field now. No commercial catcher has enough time to catch for a few fish).
Until we have better photos a determination is impossible. You only could exclude many species.
I doubt P. deissneri too. We never had them commercially. They are endemic on Bangka, and hitherto nobody is commercially catching over there. It’s not very likely things will change in near future.