[Octopus]: Ocho - A. Aculeatus Finally received a octopus

stevenfolly

Cuttlefish
Registered
Joined
Apr 1, 2007
Messages
15
Reaction score
6
Hello all finally hunted down an octopus. The owner of the fish store told me when asked where the octo was from said it was probably from Atlantic. Any help would be greatly appreciated!! Thank you guys for always being a wealth of knowledge and helpful information.
Cheers,
Steven
 

Attachments

tonmo

Titanites
Staff member
Webmaster
Joined
May 30, 2000
Messages
9,916
Reaction score
882
Location
Pennsylvania
So cool! Be sure to start up a Journal for this guy!
Thanks for sharing the great pics... I'm sure our resident experts will be by soon with some thoughts.
...I'll try to goose some input via FB.
(edit: done.)
 

stevenfolly

Cuttlefish
Registered
Joined
Apr 1, 2007
Messages
15
Reaction score
6
He/she is missing half of an arm on the front left I believe. The mantle is only about maybe an inch long. I am worried that the octo is stressed out from the pet shop and I can not find a ton on the forum on arm loss. It is active and searching around the tank, I have not tried to feed it. My pH is 7.8, sp 1.025, temp 72. I just do not want to stress it out. The shop said it was feeding on live pepermint shrimp. Just worried it loss it arm due to stress or possibly other reasons. I have no hermit crabs in this tank.
 
Last edited:

tonmo

Titanites
Staff member
Webmaster
Joined
May 30, 2000
Messages
9,916
Reaction score
882
Location
Pennsylvania
I can not find a ton on the forum on arm loss
I found this hard to believe when I read it, so I tried a search on "autophagy," and I was surprised to only find a few responses...

So, I checked settings, optimized mapping and rebuilt the cache, and now have 7 pages (120 results) on that term. Here's that search: autophagy
 

DWhatley

Kraken
Staff member
Moderator
Joined
Sep 4, 2006
Messages
20,646
Reaction score
1,813
Location
Gainesville, GA
Do you know if the arm damage occurred before or after you placed it in the tank? Virtually all octos we take in as pets are from the wild and will have lost parts of arms before being placed into a non-predatory environment.

Arm loss will generally occur in one of four ways (order of expected frequency).
  1. Predation - arm bitten off by any of a number of predators (pretty much any thing that swims and is larger than the octopus)
  2. Defense - arm discarded at a specialized section to avoid predation or entrapment.
  3. Autophagy - self immolation caused by damage and or stress
  4. Autophagy - self immolation caused a bacterial affliction (the bacteria not yet identified but anecdotally is considered contagious).
In cases 1 and 2, you do not need to be concerned if it occurred before you acquired the animal. The arm will grow back and there is no real harm to the animal (assuming the animal is not in the last stages of life. A senescent animal's tissue will not recover but the animal is in a dying state and is the least of the impacts on its health).

In case 3, sometimes the animal will recover if self consumption is stress related and the stressful condition is eliminated.

In case 4, the condition has always been observed as fatal but is unlikely in this instance.

From your pictures, I am guessing that it is NOT from the Atlantic, but rather imported from the Philippines general area and is likely in the Abdopus complex. Use the search term Abdopus in titles for both journals and images of octopuses we have identified in this genus (many are assumed aculeatus as the species).

Aculeatus is a medium sized diurnal, small egg common octopus (sometimes referred to as a Bali octopus). However, there are an unknown number of similar looking animals in the Abdopus complex. Some are much smaller, some are nocturnal. We are not sure how many are not yet described.

Lastly, your PH is very low for an octopus. I would recommend slowly raising it to at least 8.2 through water changes (your new saltwater should be registering in that range if you are using RO water and a commercial salt). You may want to add buffering for awhile until your tank maintains the higher PH. DON'T try to raise it all in one day but work on it over a week's time the monitor it and add buffering to your NEW water if needed (not directly to the display). If you have a sump, you may want to add an air stone (again, not recommended for the display tank) to encourage additional release of CO2.
 

stevenfolly

Cuttlefish
Registered
Joined
Apr 1, 2007
Messages
15
Reaction score
6
I have looked at the videos I took when she was in her bag and it is clear her arm was not there before going in the tank. Thank you so much for giving me some tiny relief. I will keep an eye on it and update you guys in a couple days. Thanks!!!!!
Cheers,
Steven
 

tonmo

Titanites
Staff member
Webmaster
Joined
May 30, 2000
Messages
9,916
Reaction score
882
Location
Pennsylvania
a search for "arm loss" (no quotes) returned 3 pages of results... I'm not sure that was the case when I tried it yesterday... possibly, our search function is acting a bit strange... will keep an eye on it.
:periscop: :feet:
 

Members online

Forum statistics

Threads
20,299
Messages
204,782
Members
8,892
Latest member
kyledkserra

Monty Awards

TONMOCON IV (2011): Terri
TONMOCON V (2013): Jean
TONMOCON VI (2015): Taollan
TONMOCON VII (2018): ekocak

About the Monty Awards
Top