That is interesting.
I was going to talk about how when I had only one froglet in the parents tank, he grew at a fast rate. Now that he has been moved and I have 2 new froglets, and a few about to morph, in the parents tank, they are not growing as fast. They are well fed, so I don't think it's food competition. I was thinking of moving them out to see if it increases their growth rate. Now, I'm not so sure.
Interesting topic.