So I've decided to spawn my blue marble DeT male with one of my dragon girls since the PK pairing wasn't working out so well. There is a better market for long-finned bettas in my area anyhow so unwanted offspring would be easier to find homes for. I did acquire another white PK male as well as a black lace PK male so maybe over winter break I will try breeding those when I have more time to devote to watching them ad making sure they don't kill my females.
He's starting to become more of a piebald rather than a marble.
Here's the female again.