hi Cam. I kept a n octopus for 7 months.He/she is now on loan to Sealife at Gardaland aquarium. Nobody told me they were difficult to keep,so I put him in a spare 30 gal tank with some live clams(vongole) and built him a hidey hole and he was fime, healthy, curious all the time I had him. After time he would take food from my hand;usually a piece of feshly-caught fish or a mussel.When I got him he was around an inch across, after 7 months he must have been 7 inches.Massively rewarding animal to care for.