So, this is my third attempt at octopus keeping. The first was not really an attempt at keeping an octo - it was an attempt at getting my horn shark to eat (it did). Second time around was a pair of dwarf octos, they lasted ~5 months, but were VERY reclusive. Now for round three. Otto was purchased from LiveAquaria. He is almost certainly A. Aculeatus, based on the descriptions I've heard here - notably the star pattern around the eyes. I suspect he's full grown, as his mantle is ~1.5" and arm length is ~5-6". So far he's a bit shy, so I haven't gotten many pics, but he is eating. I added 10 hermit crabs to his enclosure on day one, and he's devoured 8 of them so far (including throwing a shell at me this morning). His "tank" is a 10 gallon critter keeper suspended in my 2000 gallon tank, and he'll be moving into a more permanent home this weekend (85 gallon tank designed specifically for an octo).