Compatibility question..

[Calappidae]

I assume that octopus are predators and do not mix well with any tankmates besides potentially echinoderms? (perticularly damsels?)

[dwhatley]

Good assumption. There are a few additional animals you can safely place in the tank that are sessile and do not sting (gorgonians, mushrooms, leathers) but avoid zoanthids and urchins with sharp spines (pencils are fine). There is some anecdotal evidence that the Bahama Star could be a problem for small octopuses. If you include stationary animals, place them where they are least likely to be trampled, octos go over, not around things.

[Woogiekids]

I keep Kermit with starfish, anemones,a blenny and a Garibaldi. That being said, he is captive born and raised so he doesn't always seem to show the same characteristics as a wild-caught Octo would. For example, I caught him some rock shrimp which he ignores, and now I have a shrimp harem, lol

[Calappidae]

Seems to be personality based then. Keep them fed and see how lazy or aggressive that individgual octo is. Don't mix it with anything you'll miss.. However generally they have a predatory nature and often should be housed alone?

[dwhatley]

Not so much on personality I'm afraid. I am a strong NO FISH advocate, for the safety of the octopus, not the fish. Personality may play a small roll but age, full captive acclimation and size are more likely to be predictive. There is a set of examples and a good article (Tankmates - What works and what doesn't) on TONMO's Octopus Care forum that does not require joining to view (but we welcome all ceph enthusiasts and joining has no fee).

[sirrealism]

DWhatley tell them "It will work till it doesnt" LOL Its pretty simple The fish will eat the octo or the octo will eat the fish. This is not an "IF its more of a when. Believe me its been tried many times.