I would say yes, G. smithii. However, the one thing that confuses me is that it lacks red knobs at the base of its uropods. Every single G. smithii Ive seen so far has the red knobs except this guy. other than that, it looks like G. smithii, a species that makes a very good tank inhabitant.
http://www.ucmp.berkeley.edu/arthrop...name=g_smithii
pm sent.