Can I keep multiple Octopus in one tank?

Discussion in 'Octopus Care' started by cankarako, Jan 28, 2013.

  1. cankarako

    cankarako Guest

    So I have a 55 gallon tank can I have multiple octopus in it?
  2. gpx1200

    gpx1200 GPO Registered

    Sep 1, 2012
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    short anser is no
  3. DWhatley

    DWhatley Cthulhu Staff Member Moderator

    Sep 4, 2006
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    Gainesville, GA USA
    The long answer is still no.

    If you wanted to keep O. mercatoris dwarfs that are of equal size and have been raised together (found in LR together or tank hatched sibblings) it is viable in a 20ish tank and I think they are more active when kept in pairs. In a 50, however, you are not likely to see them but it would not be harmful. Obtaining them is a major undertaking as we have not seen many in the last few years.

    All other common species (there are a lot of unknowns) will not survive together in something that small for two reasons. One, keeping the water clean, even with an equivalent sump is next to impossible and two, the likelyhood of one killing the other is almost guaranteed. O. vulgaris have been kept together with mostly successes (some predation is usually reported from the labs/aquariums that do this) but the tank must be much larger (roughly 1,000 gallons but you would need to contact some of the aquariums to get a comfortable minimum. I have seen a pair in something a bit smaller but was never able to get the exact gallonage when I inquired). Any attempts at keeping anything else has ended up poorly for one or both octos.
  4. cankarako

    cankarako Guest


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