From the Pacific- as specific as that gets... I'm thinking dwarf. Skitters across the top of the critter keeper above the water line, tide pool jumper? Nocturnal, friendly, a bit of a show off. Color ranges between pale white and deep reddish brown, mostly red when he was out playing in the light. No real identifying marks except the white patch of color above the eyes, look like little caps. Very smooth, third pair of arms seem to be the longest- they look intact and third arm curled up tightly, confident in calling him a HIM.
I have been keeping Gulliver in a critter keeper in the 54 gal since Monday. I was in the LFS and they were excited for me to have him. It was a bit impulsive, but I have the 35 gal up and running for Axis's hatchlings, and can relocate a few fish from the 20 gal to there. The 20 gal is the eventual home for him.
It also looks like the suckers are staggered rather than parallel.
Make your browser full size, and look at Roy's photo of O. digueti at the top of the site. There is a slightly less red version (the original photo) on Roys photo album The little eye papillae may come and go. Monty shows 4 similar eye tabs but they are not all present all the time. Norman: pg 283 Eyes look a lot like O.bocki though (across the page) but it does not mention them being from the Pacific (there would be identifying black spots on the underside for O. bocki but Norman does not show pictures of them and I don't see any suggestion of black marks in your pictures)
YOu're right, I don't see any distinct black spots other than the hearts. I also don't see any iridescent blue at all. His mantle is rounded, not pointed at the tip. Haven't noticed eye papillae- was looking for it- but this afternoon was the first time I got a really good look.
The look of the mantle had me looking up O. wolfi (was not sure which octo but I remembered seeing one that Gulliver's resembled) but I discounted that one because the specialized suckers on the tips should have been detectable (and it is not a Pacific animal but location of capture is often wrong).
That's one of the reasons I was getting such close up shots of the suckers- wanted to rule that out, too. Everything that looked close in Norman's has some feature that rules this little guy out, but he's not giving me any distinguishing features of his own.