2 Moorish Idols at H2O

[Dmitry]

So they got two Moorish Idols at H2O. They're in the same tank and aren't fighting. One is slightly smaller than the other. Is this a mated pair? They're not IDing them as such. And they're $55 each. I saw them picking at stuff in the sand. This is FYI for those with very large aquariums and lots of enthusiasm and optimism!