I'm not sure if I actually started a thread on this one, I can't remember now, but about 12 months or so ago the wife's mate came down asking if I'd take some more fish from her (this is the woman who I definitely started a thread about some while ago titled "lost causes", you may remember it).
Anyway the fish she wanted to palm off on me this time were two little bristlenose, about an inch apiece. I didn't have my hex tank at the time, it was still up the attic at this point, so I put those two little fish in my 360. For a few weeks I never saw them, I actually thought at one point that they must have been eaten.
But they eventually showed themselves and have been ever present since. They are now about 4" piece, chunky little buggers. I'm hoping the two new arrivals progress in a similar manner, though of course, you are right, they're in the hands of the fish gods until they put some size on.