I have the longest species. Smallest?

[Skyrivers]

Rubber boas seem to be quite small. No rear fangs there. Hard to find, but I did see them listed once on Kingsnake.com. Not sure how they do in captivity.
Also maybe the egg eating snake? doesn't even have teeth.

Did some reading. They seam great as captive species goes. Acquiring one might be difficult. I am not afraid of waiting and searching. Will make the list if I can find one.