Epicrates Inonartus

http://www.vifishandwildlife.com/Edu.../20Treeboa.pdf

I think this is your snake, and it's not a rainbow. Check your endangered species laws. You might not be able to keep it. It looks like a lot like this one, A Virgin Islands Boa. They are native to Puerto Rico.

http://www.bkcave.com/PR/1-8/MiddleA...tana.boa.1.jpg

Last link is thanks to Smulkin.

thx for the link but that is not my snake that is a island of mona boa that is a island close to puerto rico. It is family of mine but that one is smaller. thx any way