I had recently posted for the first time saying that I was in the process of dripping in my first octos. I ordered 2 O. mercatoris from danthemarineman. To keep everyone updated, as far as I know both are alive and well. Acclimation was successful (one did ink a little). I have only seen one of them (once) but I frequently find little pieces of hermits and this morning I found a small part of a fiddler. I know these are nocturnal, so I'm not worried at all about not seeing them (especially when I find what's left of their snacks). I have a little red LED mini flashlight that I set across the room right before I go to bed in hopes of seeing them. I've done this the last 3 nights but have been unsuccessful. I had 3 fiddlers in there and they are very active under the red light. Anyway, every morning it is very interesting to see the small changes in the tank. A shell or two in different spots, trails in the sand, etc. I love it!! I named the two Winston and Egon. They are very small maybe 1-2" max. They had no trouble taking down the fiddler that was roughly the same size though!