My family and I are just now in the planning stage of building a new house. It's exciting and all but. My mother in her infinite wisdom has decided she wants an in-wall aquarium. Fine. Found a builder who can make one and have a wonderful system to keep it clean etc. I'm expecting a 100 gallon. no. She wants a 500 gallon, tropical freshwater aquarium. I just barely convinced her that a stingray was a bad idea, as none of us have kept anything more than a betta or six. That's it. And she expects me to stock and take care of this...this thing. I've got no idea what to put in it. We have both agreed on Boesemani Rainbowfish, but other than that, I've got nothing. It may not happen for a year or more, but I'm trying to compile a list I can use to shop/stock so she doesn't get something we shouldn't have! (you know, like a 500 gallon tropical tank.)

This is going to sound really dumb, but a placo would be fine in this thing, right?