🙂 Its completely impossible to say much about the excact species or variation, – but one thing is sure, its not deissneri.
They resemble a little my phoenicurus or tweediei females, but it will take a male to really know for sure. I would say there may be a chance one of these could actually be male, and just not showing it yet.
Perhaps the fish are young and still maturing.
So lets wait a little and then try to make more photos.