It is hard to tell without knowing the point of origin and the color of the meral spot (it is missing the left raptorial appendage). If I had to guess, I would say that it is Gonodactylus viridis from the Indo-Pacific. If that is correct, the meral spot should be white (neutral) with reddish streaks front and back. Also, this species has strong polarized signals. If you look at the uropods (appendages that extend out from the side of the telson), the pair of paddles that have a broad salmon colored stripe across them are polarized. If you use a polarizing filter for a camera or even a pair of polaroid sunglasses, the pattern will be more intense and will change as you rotate the filter.
Roy