Vampstorso: Unfortunately, after creating the first ones and being the one to establish the morph, I no longer keep any! I've been unable to keep venomous snakes for a few years because I frequently need to rely on other people to take care of them, and deadly snakes come with various hassles, and I just haven't been able to find the right person who is willing and able to do it for me. They're not really worth big dollars so a breeding loan arrangement with deadly snakes wouldn't work either. A great shame not to be working with my own morph! There are plenty of people with them now, which makes me really happy, but I'm not sure if anyone is really working on any selective breeding with them. Quite a shame as I was starting to get some good results at the time I stopped. I would have continued on because I obviously had a personal interest in them, but without being worth a grand or two each, I suppose no one else is likely to bother with various directions of selective breeding.
You're never a creep for asking about snakes on a snake forum
Neil: A few people have had various ideas about what might be a marker for het marbleds. So for all of the ideas have turned out to be wrong, but who knows, maybe something will turn out to be visual. We've produced a good number of hets and I haven't been able to find anything at all.
If you're willing to bet on your poss het pair proving out, breed them together and you'll know! If you wanted to buy one of this season's visual hatchlings it would be ready to breed next year, and it would be far cheaper than a yearling or adult visual. Send me a message if you'd like to chat, I have some really nice ones and will shamelessly beat anyone's price