Melissa(11) recently has gotten a fiddler crab. In a 10 gallon tank. I went in there at about 1 AM last night to take a peak at him while she was sleeping and I couldnt find him in there. And theres not alot to hide under/behind. I stared at that tank for 15 or 30 minutes and there was no crab anywhere.

then this morning hes back?!

Is it possible he is leaving his tank at night? Beats me. Its sure weird tho.