Those are beautiful. I'd love to see them in a more natural state. Held out of the water takes something away from them I think
I found some on ebay. They were wholesale housed but still very lovely.
If its not goldfish or koi, I don't breed it on purpose. Not because I dislike em but have a limited ammount of space and I try to stick to what I'm good at for now. Id be interested in seeing the offspring if you do take up the endeavor