Not F. verrucosus IMHO. The skin texture is too uniform (no pattern of pronounced, warty tubercules across the body, few on the cheeks), the dorsal spines aren't pronounced enough, no gular spines. The natural range of F. verrucosus is south and west of Antananarivo. Poor thing looks in poor condition overall. Maybe it's just an odd pose, but possibly an old spinal injury?