Unless this was sold as a "Malaysian" it's more than likely of Sumatran decent. \
That's a RED BLOOD PYTHON, through and through. I can tell by the coloration alone.
Also, Sumatran Short Tails are known as just that, Sumatran Short Tail Pythons, NOT Black Bloods. The second animal also is indeed a Sumatran Short Tail.
There's a lot of confusion as to what these snakes are really called and I'm trying to help clear it up, nothing personal
So it's....
Red Blood Pythons-Python Brongersmai
Borneo Pythons-Python Breitensteini (these are the ONLY Python species to come from Borneo)
Sumatran Short Tail Python-Python Curtus