BN stunted

I got a bunch of tiny babies about 3-4 months ago. They were way too young to have been sold but about half survived the first month. Anyway I now have some lovely healthy and apparently happy BNs. They have all grown at pretty much the same rate all bar 2. The first is bigger and chunkier than the others by about 1cm but one is tiny. He's around 2cm and about 1/3 of the size of the biggie. It's weird as he's really healthy, very active and eats and poops well, and he's bulked up from a little skinny fry to a chunky baby, he's just little. Are BNs like humans in as much as they come in all shapes and sizes or will he just catch up in the end? Of have I grown the first pygmy BN?? :bball:

Fishes are like a box of chocolates- you quite can never tell what your going to get
J

you will find you get this with every brood you raise theirs allways a few that just dont grow as quick and i find males grow quicker upuntill he takes up a hideing place then the females seem to grow quicker anyone else find this happens with theirs or is it just me

Put it this way
I have 2 x Common Females purchased at the same time and being in the same tank and one is 15-20% bigger than the other no reason for it
Had them since 1.5inch or so and now 3-3.5 inch