All the pix with an eyespot and a few without are the same octo. The yellow one obviously isnt a bimac because it never had any spots, the other one has spots in some pix and not in other, and the size, color, and look of the spots changes. It also laid eggs, so it obviously reached maturity, but only got to about 2" head size, and 6" arm length which from what Ive heard is rediculously small for a bimac.
This is the only full tank shot I can find on my computer, its from the tank during the cycle. Its a standard 29g tank with about 30lbs live rock, 20lbs live sand, and the ecplise filter system with lr rubble in the filter compartment....and yes, that is my bedroom :happyfish
Jon