i saw the bottom of the larger crab tonight and it appears from the pics posted by Riverserver (thanks btw) that it is indeed a male. now if the small one would just do a dance in front of the glass for me...
Selotape a photograph of its partner on the front of the glass, just up a few inches.....it may shake its bootie and then you can snap some pics....lol
i am of course joking here.....sheesh..........people take me WAY too seriously..........lol