OK, so my cube has been set up for about 8 - 9 months now. I have not introduced any live rock....but I keep finding new crabs in there - hitchhikers.
I already killed a gorilla crab - there is one other hairy ugly crab that I see frequently, but he is too fast to spear. I found a nice porcelain crab - a red crab (which is supposed to be a good algae eater I red), and just today I found a small white crab on the gravel. when I flashed the light on him he went to the rocks and kinda wedged between the rock and sand - and it looks like he buried himself.
I wonder how many dang crabs are in there that I have NOT seen. Anyone else had this happen to them? I need to research the white crab to see what he may be - good or bad!