I have two Platies and a Guppy. The Guppy likes to follow one of the two around and is either nudging it or pecking it.
It's very active, it seems to like swimming around, as well as nudging the others.

Guppy & Platy Other Platy

I'm not sure of the specific breeds of any of them, despite just getting them last night (>.>) ir if that would play a part in one wanting rank over the others.

Also, one of them had babies last night. About how long before they grow a bit(at least large enough so they won't be hiding all the time)?

Thanks in advance