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Hi advice needed please


Larval Mass
Nov 18, 2010

I am looking to buy and octopus I could really do with some help picking the right one! Im looking for one with a longish life span I have been looking and seen most only live for 6 months, could anyone tell me a species and how to I'd them and size they would grow to and any places they know where to purchase I live in the uk as well.

The tanks which i am looking to get is a 150 litre I would rather have an octopus which doesnt mind the light in the day time to much any information would be great

many thanks.


Colossal Squid
Staff member
Jul 9, 2009
South Florida
:welcome: to TONMO

When it comes to picking an octopus species often there is not much of a choice. Most suppliers have no idea how to identify them so they usually just call the"Common Brown Octopuses" but technically there is no such thing. So basically it is a huge gamble.

I'm not aware for a place to get octopuses in the UK. Sometimes the Local fish stores there can special order them

Unfortunately 150 liters is too small for most octopuses axcept the dwarf species, O. Mercatoris, which is nocturnal.

The min for most octopuses is 300L


Haliphron Atlanticus
Sep 25, 2006
I live in coastal southern California, and I keep Octopus Bimaculoides, which is common along our coast. It took a while to learn when where and how to catch them, and a lot of research on Tonmo, and elsewhere, to learn how to keep them, but now when my octopus dies, I can go catch a replacement. There is a species of octopus that has become quite common in the northern parts of england and in Scotland in recent years (a nuisance in fact - because of overfishing cod which used to prey on young octopus) called the Lesser Octopus - Eledone cirrhosa

A very large one is about 30 inches from tentacle to tentacle, which is a little smaller than a bimac, and would probably fit into a 150 liter tank (especially if you add a 70 - 100 liter sump). The downside is that you would need a chiller to keep the water cold enough, and you would need to insulate the tank, or make it out of thick acrylic, to avoid condensation. The up side is that if you live where you can easily catch your own - you can easily catch your own. You can probably pay a crab or lobster fisherman to get one for you (as they often find them raiding their traps).

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