Need help identifing please

danielb333

Pygmy Octopus
Registered
#2
Was told a pacific common octopus but when I Google Searched under that name. only thing I found was giant pacific octopus. Got him at a LPS here in California
 

danielb333

Pygmy Octopus
Registered
#4
Here's another pic he is running around with a piece of shrimp I gave him. I was told he lives the longest out of all the octopuses which sounds like the Giant pacific which not gonna lie has me a little worried about the size. But I also know local pet stores can usually be wrong in identifying. Any help would be appreciated so I make sure to set up the best habitat what ever the species. Thanks
 

DWhatley

Cthulhu
Staff member
Moderator
#5
Unfortunately, there a number of "common" octopuses on the US Pacific coast. It is clearly not O.bimaculoides or O.bimaculatus but I am not well familiar with small O. rubescens (pretty sure it is NOT GPO which probably also discounts O. rubescens since they are hard to tell apart at this size). Both O. rubescens and Enteroctopus dofleini (GPO) are from the far north and require a cold tank (low 60's). If I had to guess (assuming it is actually from the US Pacific coast) I would suggest looking for images of O. digueti. It is a small octopus found on the West Coast in warm waters. Sadly, googling images of any octopus will produce numerous species without qualifying identification and is not much help but the link will take you to some of @Neogonodactylus ' well classified images in the TONMO media forum.

@Taollan ??
 

danielb333

Pygmy Octopus
Registered
#6
Thanks alot for the reply! looking at the pictures my octopus does look like the female one Octopus digueti
it has two dark spots at the edge of its head. Haven't seen the white spots yet though.
 

DWhatley

Cthulhu
Staff member
Moderator
#7
I suspect the "dark spots" you are noticing are the gill hearts and won't help with id. Most cephalopods, octopus, cuttlefish and squid (but not nautilus) have 3 hearts, a centeral (systemic) heart that moves the blood around the body and two gill (brachial) hearts that pump oxygenated blood to the central heart.


(Image from http://nerdy-girls.org/2014/06/27/things-i-learned-from-cephalopod-week/)

OctopusHeartsDiagram.jpg

For sexing your new ward, have a look at this post.
 

danielb333

Pygmy Octopus
Registered
#8
I suspect the "dark spots" you are noticing are the gill hearts and won't help with id. Most cephalopods, octopus, cuttlefish and squid (but not nautilus) have 3 hearts, a centeral (systemic) heart that moves the blood around the body and two gill (brachial) hearts that pump oxygenated blood to the central heart.


(Image from http://nerdy-girls.org/2014/06/27/things-i-learned-from-cephalopod-week/)

View attachment 63686

For sexing your new ward, have a look at this post.
Thanks really cool I did not know that and thanks for the link. I'll have to keep an eye on his arms now to figure out.
 

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