Well, I have two white's and four mantella viridis.

I got the mantella in june or july, can't quite remember right now. They are great frogs, but a bit on the shy side as juvies. Well, for at least two months I was convinced one of them had died because the most I had seen was three. Yesterday, I saw one I don't remember seeing before, since it was so skinny and much smaller than the rest. I think my little guy was a little intimidated by all the women surrounding him! Well today I actually got to count for of them in the tank. Thank goodness!
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I think my frog owns a megaphone....

White's tree frogs : 1:1:0
Mantella viridis : 1:1:2