That is a beautiful setup!!
I started with about a dozen RCS from a long gone LFS years ago. I had them spread out among my different setups as time when on. Gave countless numbers away, etc. Just when I think they're gone (all eaten), I'll find a few. Some months back I started a setup with a simple 2.5g glass bowl, seeded sponge filter, some seeded gravel and a simple screw in LED bulb with some java moss. Now I get so many in this setup I have to scoop them out! Lousy pic, but this is how it started: