It was hard to say by the last pic....
My first choice was borneo, because in that head shot it looked to have subocular scales just to the right and under the eye, whch i assumed (because of the dark head) the scales continued under the eye, and that it was a borneo....
U can see what im sayin in this pic...
Those number 2's underneath the eye are called subocular scales.
And what differentiates the borneo from the red blood, is that the the borneo has these subocular scales, which divide the orbit (eye) from comming in contact with the supralabials (#1's)
Now the red blood (curtus brongersmai) doesn't have these suboculars (#2's) and the orbit comes into complete contact with its supralabials (#1's)
As u can see in this pic of a red blood.
The orbit comes into direct contact with the supralabials (#1's) and they lack any suboculars.
Many ppl know how to determine what subspecies it is just by looking at em'
All it takes is seeing enough of them, and eventually you get a feeling for the colours/pattern each individual ssp holds.
However, There are many ppl who sell these animals who dont know what exactly they are, and thats where the new comer gets mixed up and the cycle goes on and on and on.....
U can expect it getting 5-6 feet in length with a big girth, a 4' by 2' would suffice for an adult.
Hope this helped and if you are interested in reading up more on this click on my banner below, and check out the taxonomy page
And you can check out the caresheet too to answer any questions u may have.
Have fun with him/her!
Grant vg