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[Octopus]: Asian Food Market Octos - Take 2

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Dec 6, 2009
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The one male continues to deteriorate but the other male and female seem to be improving. Found a crayfish that was dead this morning with an empty tail... No sign of any flesh in there at all, although I am uncertain as to whether this is an affect of the saltwater on it. The head and thorax still contained internal organs so unclear on what happened. I removed one that died from the saltwater last night and removed another dead one today. I need to get some fresh shrimp for them as the frozen doesn't seem to cut it. Perhaps also some mollies so I can acclimate them to the saltwater as a potential fod to induce eating. Raised the temperature another degree to 59 - have done so quicker than I wanted to but figure three degrees is not that much over three days. I am shooting for a temperature of about 65 degrees.
 
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Lost the male that looked like it wasn't doing very well. The other male appears to be doing well, but will not take any offered food as of yet (I offered some silversides to no avail and also put in some more crayfish). It came out for a spine when I was down there and I turned on the room lights and took some video. The female was in hiding in the back where I couldn't get to, but last I saw of her she seemed to be OK. Coloration seems pretty good as well. The male that ventured out was a reddish brown color and didn't shift much from that. I took a video as well, not the best clarity as it lost focus in the low light conditions of the tank often.


Please ignore the screaming children battling on Kinect Sports in the background...
 

DWhatley

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:thumbsup: That color looks amazing compared to any of the first attempt! You might try to watch (difficult, I know) the length of that regenerating arm. If you see growth, that is a good sign for both age and health as the regeneration slows as they age or are in poor health. The white spot on the front of the webbing looks like permanent chromatophore damage though and more often seen in older animals. I suspect (conjecture from one incident only and the animal died) that the extreme cold could have caused it.

The male is moving around nicely so I think your caution on how warm to keep the tank is warranted. His stroll does not look like what I have seen of senescence but it is a concern that he is not eating. It will be interesting to see if continuing to warm the tank will induce an appetite.

Cool that the kids are enjoying the octopus!
 
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Wow those eggs are ENORMOUS! I'll give this a thorough read tonight and see if I can provide any info that hasn;t been mentioned yet. Thanks for posting pics!
Excited to read your feedback! I think I put this in the previous thread, but the octopuses have squared arms as well. I believe it is fairly apparent in the videos as well but then again the video is not great in terms of focus quality - will have to use the video camera or do some underwater filming...
 

DWhatley

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I bought a used camera to try "underwater" filming but have not proceeded with the experiment :roll:.

@mucktopus, I thought they looked really large too but have never seen eggs before they were laid. They look about the same as O. briareus I think (with no size or reference it is hard to tell). Also look at the hectocotylus, it is distinctive. I am sure I have see pictures of one looking like this but have no clue as to where. Any suggestions on finding ID info with the clues presented?
 
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I left the temperature alone today and am basically twiddling my thumbs at this point... I know that the remaining male and female are both alive but I am unclear on whether they are doing any eating at all. One of the crayfish was missing two legs, but other than that appeared to be whole (although it could not handle the salt water so I pulled both of them and fed them to my eels). There are now two burrows in the tank where they have gone under the rock and I can see evidence of their digging by the holes that surround the rock itself. I know that they are in there because I can see the random arm and when I turned on the light I could see one of them huffing and puffing and blowing out little clouds of silt/sand from its burrow as it moved deeper into it, but other than that, no sightings...

I will go down later tonight when it's dark to see whether they have touched the piece of shrimp that I offered on a skewer, not sure of what other types of food to offer at this point in time. I have to date offered silversides, clams and snails, red claw crabs, crayfish, and frozen and "fresh" shrimp. Any other suggestions on what foods to potentially try would be great. I am thinking something smelly and stinky might entice them to eat, but am unclear on whether that will work or not. I was thinking of trying scallop as I fed a flame scallop to a wild octopus years back on my honeymoon in Tahiti, but the scallop at the store doesn't look all that great.
 

DWhatley

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Have you tried plain old live fiddler crabs? They are a typical fall back but I don't know how well they will do in the cold.

I tried looking up Inverts of South Korea and got this :roll:
http://www.alibaba.com/countrysearch/KR/off-grid-inverts.html


Changing my scan to Marine Invertegrates South Korea, I did find this pdf entitled Marine Invertebrates of the South Pacific. It was not much help (under grad paper I think) but it does show a chart on pg 26 that suggests that crabs and shrimp would be the expected primary prey.

I also found this pdf, Coastal Mollusks of the Yellow Sea Ecoregion and their habitats. Again not a lot of help but does confirm clams should be on the menu.

When you offered clams, did you open them and leave them out overnight? If not, you might try it as the clams don't deteriorate quickly and Shiitake at one like this the other night when I placed it by her den.
 
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I have live clams in there and some of them open up slightly as they die off but are not eaten. Haven't seen fiddler crabs anywhere here for a long time - also have yet to order them from an online seller as I don't want to end up with a bunch of fiddler crabs but not have need of them if these don't make it...
 

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