I think your tank looks great. I love rotala. I like the "forests" it creates.
I never considered a betta for Endler control. I have lots of different kinds of livebearers, but the Endlers beats them all. I have a 20 long tank of wild-type guppies. The colony has been in there for years - always seems to be a nice balance. The Endlers just keep breeding and breeding and breeding.....
