Some more:
Yes, Helene, I also think that they are not completely “new”. I wouldn’t have thought that they might be “months” old – one month or 6 weeks would be my estimation. But this is a deduction from the development of fry of my Badis singenensis: A species of a size similar to paros (about 4 cm), with a similar breeding behaviour (breeding in caves, the male cares for the eggs, the fry leave the cave within a few days, they then have the size of small white mosquito larvae, they are nearly invisible, hiding in the ground cover). These Badis fry reach the size now shown by my little paros within 4 to 6 weeks.
But you are experienced in breeding paros – in contrast to me. So if you say they may be months old, it will be right.
The young paro I show on the pictures is the biggest. I have seen 3 young at a time – the others are noticeably smaller. This bigger one is swimming free, slowly moving through the plant roots hanging from the surface. The smaller ones are still mainly “ground dwellers”, hiding under leaves.