So, I have three (maybe) shrimp and twelve Harlequin Rasboros in my fish tank thus far. The Harlequins seem to have settled nicely (they aren't dead) and scooting about the place looking all schooly and fishy. One of the shrimp, after a couple of days of not seeing them, decided to have a bimble about the bottom of the tank, poking it's feelers into plants and wotnot.
I think I will get a couple of catfishy things next, for the low-level, and some tetras/gouramis for the mid-level. I don't know. There is a lot of choice out there.
I do know it is wonderfully therapeutic and soothing just watching the fish go about their business. And it is just what I need at the moment.