They are so rubbery it is difficult to measure a live one, so they are usually sized by telling the size of their "mantle", which is the bag that you would think of as their head. When I caught my octopus, a female I named "Lefty", she had a mantle size of about two inches. When she was fully grown her mantle was about 3 3/4 inches, and if she really wanted to, she could probably manage an arm span of about 30 inches. Experienced octopus keepers say that a 50 gallon tank is minimum for a bimac. I agree, but bigger is better.How big do they grow? Lovely ppics
She gets a small piece (about 4 cc) of thawed frozen shrimp, or scallop every two days. Some octos won't take dead food, but Lefty does, so it is cheap and easy. When I go to the beach at low tide I try to grab a little shore crab for her. Octopus are smart (probably about as smart as a mouse which is brilliant for a mollusk) and they get bored easily, so they like to hunt live food. Plus, the variety improves the diet.What do you feed him?