*sharp deep inhale* well it all depends on your personal favorite and head shape. GTPs all max out at around 4-6ft but because of the body type it doesn't seem so. They arnt a snake to "bolt" out of your hands or off their perch.
Also, telling the difference just from eyesight takes a lot of looking at the locals and noticing the differences. Besides pattern,colour, headshape and body type you have to rely on the pedigree behind the animal for sale.
About 85% or so of the WC and FB babies for sale will be biaks. One of the larger snappier locals.
Ill give you a list of the known locals (to my knowledge. I probably am going to miss a few, but a chrondro guy can come and correct my mistakes so I can learn too
)
Biak: larger, meaner local out there. They take some time to go threw colour change. And have generic green colour to them.
Sorong: med. Sized local with nice temperment. Get a bit softer green and have soft blue tones. Also have a longer more narrow head.
Jayapura: med. Sized local with ok temperment. Get a darker green with darker blues.
Aru: med.? Size local with nice temperment. Nice true green with soft shades of blue
Arfak: smaller sized local with ok temperment. Darker green with black scales and very little blue.
PNG(papa new guinea) : not sure on size, temperment or colour as these seem to only be outcrosses. I.E. PNG x aru etc.
Kofiau: smaller size local with ok temperment. High quality ones stay yellow.
Meraku(sp?): smaller local with nice temperment. Lime green with soft blues.
Lereh: pale greens, with pale blues. Don't know much more.
Id visit MVD for more info, I think I have the link in the thread started by Username: Takenlate04
Sorry I couldn't be of more help