So I will keep trying to get a pic but I discovered a small crab in my tank this morning. I only catch fleeting glimpses of him but he is all black with white stripes on his legs and white tipped claws. Only about the size of a nickel. Can't get a good look at him all at once and I can't seem to flush him out. Seems to be smooth without the "hairy" appearance of a gorilla but that's about all I know. Assuming he was a hitchhiker on some TBS rock I got last month but I can't seem to find anything matching. Do your magic guys! I will continue to try and get him out so I can see him better.