As far as discus are concerned, there is no 'dwarf' species.
Having said that however, there are ways to limit their growth without sacrificing their eventual health and quality.
If anyone is interested in keeping/raising smaller discus, there are safe ways and means of doing so, and I'd be glad to provide some advice.
Yes, discus lovers, it's a fact, that would mean deliberately 'stunting' them to a certain extent, but without compromising their health and overall beauty in the eye of the beholder. And I say this at the risk of being 'bashed' for even suggesting it.