Forget all advertizing as deissneri. Although the photos are not sharp, this fish is something like P. spec. blue line. Very different from deissneri. You see true deissneri for example in our book in brilliant photographs. It’s the typical nonsense of the traders who simply use this oldest name for nearly all species of Parosphromenus. True deissneri has up to the present day been never imported commercially but only by private breeders that visited Bangka. There is no commercial activity on Bangka at all. The male deissneri is strikingly unique by structure and colour. See our species section.
But your fish is nice, strongly coloured and you should try to breed them!