I have a 10g tank in my office. Right now, I've got a couple of eastern mudminnows and a bunch of White Clouds. If I got rid of the minnows, what other natives would be suitable for a 10g? I think it'd be neat to have a breeding population of something? Should I get more mudminnows (I think I've got two of the same sex right now), or something else? Thanks! Chuck/Washington, DC