2 years ago i bought a 1.5 inch and 12g weight little girl from John Coakley (florida).
She is now a 4 inch and growing 225g female with a sweet disposition.
Most of my wee males(speculation just off size and similar age to others twice the size) are staying wee. I've seperated them from the fast growers. Hey sure do take off though don't they? I remember when most of mine were 8 grams. Now they're as much as 250.