O. boki is a dwarf octo with arms to 8 cm. It's hard to tell from your photos, but she looks a bit big for that. She looks like a macro pus with those long arms. Also, do you see a pair of large dark spots on the underside of the mantle? Now that you know what to look for, she's never going to show you that part of her body...
@Erica, I vote with @sedna on the Id. We have recently decided that this common red nocturnal is Callistoctopus aspilosomatis a nice tank sized nocturnal usually from the Philippines. You can use the search function for O. macropus or the species name for more journals on this little guy. I have kept a couple and found them very interactive (albeit at 3:00 AM) and very hardy.
With your permission, I would like to rename your thread to Nymphadora - Callistoctopus aspilosomatis and move it to the journals section with hopes that you will keep a record of your adventures with her.
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