Hi! I am very excited to be a new member with a new octo! My usually very reputable LFS said he was labeled as a "common octo" by the supplier, but that the few they have gotten are always labeled as such. In the 20+ years I've been keeping marine tanks I've always wanted an octo, so I really want to do right by him. I have a 55gal, but if he is a vulgaris, then maybe it's time to start cycling a bigger tank? He is active in the day, very interested in all the action in the living room and never really hides at all. He spends most of his time walking the glass or balled up on the front corner of it, never much time on the substrate or in his midden. He displays a lot of texture, does have those small "appendages" above his eyes (not as prominent as other breeds I've seen on this site), and for sure NO rings or eye spots. Also, I refer to it as a 'he," my daughters want to know if there is a way to tell for sure... Thanks for any help you can give!