Octopus rubescens, not GPOs

tjohnson

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I need to get some of those barnacles that are in that picture, I've seen other people using those in thier tanks, and I think my lil guy (Crazy Legs would really enjoy them. Anyone have a source?
 

Nancy

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I bought a big bag of them (around $10) from one of those oceanside shell shops in Galveston, Texas. They were called Goose Barnacles.
I've seen big clumps of them for sale in various LFSs, also ones made out of resin.

Some octopuses will hide in them - my bimac would not.

Welcome to Happy Legs!

Nancy
 

Jakxx

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Hm, I looked a little around and often the same pair of arms are refered to as "the first two" or "front two"

So basically the octopus has a "front" and "back".

this nicely shows in this picture here for example:


Note that the octopus faces left although he is about to move towards the camera sideways, one eye leading the body. So the opposide of the mantle has to be the front part :smile: Although I think most pepole who see this picture would say that the octopus faces right. It just looks more natural to most people, but when you consider the position of the beak, it all makes sense that he actually faces left :smile:

Most octos don't really seem to care though :P
 

joel_ang

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I guess this goes to show how hard octopuses are to identify, even to the experts...

it wouldn't seem right for an animal which relies alot on vision for hunting and survival to have a large vision obscuring mantle in front of it would it?
 
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Nancy,

What are the differences between teh rubiscens and the GPO?? The photos look very similar to the last GPO I got from Living Elements. Is this a mistake that people can often make?

My GPO (?) died a few weeks back after me finding some eggs in the tank but was not all that big (about 150cm arm span) by the usual size i see them. Could I have had a rubiscens?

~Andy
 

Nancy

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Hi Andy,

I think your octo was too big to be an O. rubescens.
They're hard to distinguish when they are smaller, and those whose photos I posted were still quite small. O. rubescens has a body of 10cm as an adult, arms to around 30 cm each, while, as you know, a GPO gets much larger.

The distinguishing features of O.rubescens are ring-like white markings. There are two pairs of these, one on the body and the other at the base of the arms in front of the eyes. These can be hard to see on younger octos.

I suspect that you had a smaller GPO - not all of them get so large.

And just a personal comment - a lot of people seem to get bitten by O. rubescens - I first encountered this in comments of divers. And sure enough, when I was visiting the NRCC, one of the little red octos bit Jonathan!

Nancy
 

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