I'm getting ready to redo a 55 into a rainbow tank (haven't quite settled on which ones) and am trying to decide what fish I want on the bottom. I have cories in virtually every tank so would like something a little different. I'm not a fan of the bigger bodied loaches - for example, dojos are fine because they're thin bodied even though they're long, most zebras I've seen have been smalll enough that I like them, don't like clowns or yo-yo's. Not at all set on loaches, just giving an idea of what I do/don't like. I have an L129 I will most likely move to the tank regardless, but would like something that's a little more active like the cories, but isn't a cory.
The other consideration is that I have high ph/high kh water. My experience has been that most fish can and will adapt just fine, but I don't want to get something that is known to be especially sensitive to those conditions. Suggestions?