Lovely
I know some think this is S.pridii, but at 2.5cm would you not expect a more 'adult' appearance, especially in the markings

And the mouth is more 'under' than in the photos I have of S.pridii. Obviously young fish change, but Im not to sure on this one
Theres something about the head that doesn't look quite right, I think I had one when I first got them at 1 inch and the banding was entire around the body, but there were about 8 bands in total. Pic below is of late last yr when the banding was only visable halve way down.
Fish at the front
I would certainlly be interested in up dates and more little pic's of these chaps

Perhaps you could speak to the store you got them from and see if they were wild caught and if so, where the location was ?
Beautiful Photos btw
Ashleigh
Edit- Found my old post on this one above, it did confirm that this one was approx 0.5 inch smaller than the rest so that would make it 1 inch or just under since the S.pridii ate 1.5-1.7 inch now.
Heres the pic's from back then
