I have had 1 dojo loach for about 6 months by himself, I've been trying to get 2 more for him, but the LFS's around me haven't been able to get any, and I won't purchase fish from petco/petsmart anymore. Anyway, he seems fine, zips around the tank, and hangs out with my pleco. Do I need to add 2 more at this point, or should I let it be? Also if I add 2 juveniles at this point, would they even become a shoal, or would there be territory issues?