I've been thinking about adding a scavenger or two to my 180g cichla community and I'd appreciate any input. My only criteria is that it doesn't grow huge, won't harm my cichla, and is hopefully endemic to South America. I'm a bit of a stickler when it comes to mixing species from different parts of the world. We all know how messy cichla can be when eating, it'd be nice to have something to help clean up the scraps!