Most Florida killifish are excellent community tank residents. I have kept golden topminnows and bluefin killifish in community tanks; they are very peaceful. Seminole killifish and Florida flagfish are slightly aggressive, but should be fine except with very delicate or timid fish. There are quite a few other species too, those are just the four I have experience with. Check out this site: http://aquat1.ifas.ufl.edu/ for aquatic plant info, and this one: http://forum.nanfa.org for native fish info.