can my tortoise have a tortoise friend of different species

by laura
(las vegas)

I have an african spurred tortoise aprx 6 months old and would like to see if he could have a friend tortoise, I know they are territorial and would get a bigger cage for them, and know I would probably have to get a female. I would like to get another tortoise for a friend they can both go outside in my backyard during the day it is tortoise proof. but don't want any fighting, Is my tortoise happier being the only one or would he enjoy a tortoise friend?