Hmm, I was just wondering because I had a maroon clown for about 4 months and then a week or two ago got another clown, smaller, so as not to cause too much fighting, and also a maroon, in hopes that they might pair up. And within two days they've been stuck up each others butts pretty much lol. I rarely see them away from each other and they host the same stupid powerhead. I didn't think they could pair up that fast. I wasn't expecting it, just hoping.