divider in shellie tank

[mooman]

I'm thinking about putting in a tank divider in my 20g long shellie tank, and buying a pair of multis to put on the other side. It would be temporary. I've been planning on selling the brevis once they color up and pair off in a couple months. Has anyone ever used a divider in a setup like this, and did you have any issues?

 

[Swimfins]

I was wondering if opaque dividers are available? I've only seen glass, and it sure would be nice if the divided fish didn't know who was on the other side..sumptimes.