If you'd like to add dwarf gourami's I have a very good looking male specimin and two females that don't look too hot at the moment. I'd be happy to post a pic of my male though if you'd like to add him.
Mods do you mind me asking why this hasn't been pinned? Does it need more information or does it need to be set up a bit differently? Or is it just not a desireable pinned topic?
Many of the fish mentioned are available in quite a number of shops around me - but then again London is a big city. It's impossible to know what your lfs will stock, so it's best you take pen and paper and make a list of all the fish "they" say will remain small. Then go home and do your own research
I suppose we shall just have to keep bumping it, then.
When I had a 10g, I kept a single betta in it and 3 african dwarf frogs, along with several shrimps. It's not a tank for everyone, most people prefer a really really active tank, but I enjoyed it because I think ADFs are all that and a bag of chips, and I also have a fondness for bettas. I also kept 1 betta, 3 ADFs and 1 otocinculous in there with success, as well. Of course, it's all dependant on how aggressive the betta is.