My Betta rutilans juveniles are coming along well now. There are a few runts that have to catch up to the others, but they are looking very much like replicas of their father and older siblings.
I also have this supposed full sibling of theirs that I am starting to suspect is not a rutilans at all. I think perhaps it is Betta brownorum but the lack of the green lateral spot makes me unsure.
Hailing from Melbourne, Australia, I currently keep and breed a number of species from the coccina complex.