Dear Omaha and dear Martin, wie can take this in one reply.
Glaser is the leading wholeseller of aquarium fish in whole Europe and One of the biggest in the world. Nearly all Parosphromenus that appear in shops in Europe are distributed by Glaser. I know the relevant people personally. Koelle is delivered by Glaser, too.
The second picture, Martin, does not show a female but a male. Females have Never such small iridiscent bands around their unpaired fins. This picture really looks like Sentang again. But I am not sure. It maybe an aff. bintan of a different location on Sumatra.
Probably the seller will not reply, they cannot say other things than Glaser. And wie know the latest sources of Glaser-fish. It’s Sumatra and nothing else. Only the exact place can vary.
If you want to receive really different species, you Must come to Germany and visit a Good breeder or a meeting of the EAC or IGL. Next year at our first international meeting of the Paro-Project in Hamburg there will be at least eight or ten species present for distribution.
Another possibility is to name a German address and a breeder will send the fish there. After that they Must be fetched there. I would be delighted to help you.