I remember back in the '90s we imported some when I was still at Glades Herp. I think it was from someplace in S. America - hard to remember, since I wasn't really into them and they didn't do very well for us. The genus name "Lystrophis" (sp??) is coming into my mind as I see the photo, but I can't remember if that is a correct memory or not. You can probably Google it with some spelling variations to see if you can get more info, if you are interested enough to do that. Back when we imported them, I doubt that anyone was breeding them. But c.b. babies hopefully will do much better than the wild imports did.
Can't really tell you much about them as I just can't remember anymore than that.