Welcome to TONMO, the premier cephalopod interest community, and birthplace of #WorldOctopusDay and #CephalopodAwarenessDays. Founded in 2000, we are a large community of experts, hobbyists and enthusiasts, some of whom come together when we host our biennial conference. To join in on the fun, sign up. You can also become a Supporter for just $50/year to remove all ads and enjoy other perks. Follow us on Twitter for more cephy goodness.
A 55 gallon would enable you to have a bimac (O. bimaculoides), which a number of our Tonmo members keep. This species is captive bred in California and you can get quite a young one. Have a look at some of the photos under Journals and Photos here at Ceph Care.
If you're interested, then we have lots for you to read - just click on the Ceph Care button above and look at our articles, starting with the Equipment List and the Checklist.
If you have further questions, please don't hesitate to ask.