I wonder what makes this little guy special that he is the only survivor from his brood of many. He is the offspring of gold sailfin Molly’s.
His siblings were hunted down by their parents and a bunch of red coral dwarf platies. It’s a jungle in my tank.Think of kittens or puppies...pick of the litter sort of thing. This little one has survived when the others didn't. The question is why did it survive or rather, why did the others not make it? Water parameters? Breeding? Nutrition? I would investigate for your follow-on broods.