BCI - indicates that the bao came from a certain habitat that is differen't to that of BCC boas
BCC - means the above, but also shows differen't saddle shape, color ect ect.
Usually its very easy to identify a BCC from a BCI
BCC include - Peruvians, Suriname's, Guyana just to name a few
BCI include - Colombian, Nicaraguan, and one other which I cannot remember, again there are more though
BCC are generally harder to keep. They are much more difficult to feed properly and they are not as hardy as BCI (or so ive read, no personal experience with BCC boas though)
Mainly, I've read that you have to offer them much smaller meals than usual or they will regurg.
They also require slightly lower temps than BCI
Here are some pics to show you the difference:
My Colombian BCI Powder -
Peruvian BCC (looks kinda like Powder eh!?! That is interesting) -
Those are just two examples, its good comparison so you can see the tail pattern difference and tail colour difference, all that Jazz.
Hope some of this info has helped!