• Welcome to TONMO, the premier cephalopod interest community. Founded in 2000, we have built a large community of experts, hobbyists and enthusiasts, some of whom come together when we host our biennial conference. To join in on the fun, sign up - it's free! You can also become a Supporter for just $50/year to remove all ads and gain access to our Supporters forum. Follow us on Twitter and Facebook for more cephy goodness.

Suspected mercatoris (and if so..)

Joined
Jan 12, 2019
Messages
8
Hello everyone!
Received the long awaited call from the LFS and picked up a little octopus that seems healthy. From what I can tell, he(?) looks most like O. Mercatoris, but I wasn't sure. Still waiting to hear from the guy about where they ordered from. Any thoughts? M/F, Species, etc.
Also if it is a mercatoris, I thought they preferred a smaller tank, and I have a 90 gallon with about 70 lbs of LR. I did see him(?) yesterday around 9pm by shining a red light for about 20 minutes with all other lights out. Am I going to have a constant hider, and is there anything I can do about it? Also any input on feeding a really small octo would be great. He rejected the tiny piece of krill I offered. I have some ghost shrimp in a freshwater tank, but they're pretty big compared to the octo.
65267652686527065269
 

DWhatley

Kraken
Staff member
Moderator
Joined
Sep 4, 2006
Messages
20,913
Interesting octo. The closeups seem to show a black dot above each eye, is this a valid and consistent observation? If so it would be an identifying clue but not common to O. mercatoris. It also appears to have a large unpigmented section along the dorsal side of the mantle. This is worrisome as the one time I have seen something similar happened because the animal was exposed to extreme cold. It would indicate a damaged area but may not be recent.

I would consider a smaller home if you can capture it without harm. If you can locate a cluster of giant purple barnacles, you might have success with a den choice for either observation or relocation.
 
Joined
Jan 12, 2019
Messages
8
Update:
Still doing well, Marcus Aurelius (I'm just gonna assume male) has been I think crepuscular? I see him under red light at about 8:30pm and he's been taking some ghost shrimp, clam pieces and eventually frozen krill. I contacted the store about where he came from and they just told me "pacific" Well, that's not super helpful, so I'm just waiting for any identifying characteristics. I think I have a young one, but not totally sure. I had the tank at 74.5 F for the first few days, but after reading some posts here I turned off my fan and the temp climbed to 79.0 F over a few days, which I thought was closer to a tropical pacific environment. My dad took a picture under red light and managed to edit the colors so that the Marcus is much more visible
65283
 

Latest Posts

Forum statistics

Threads
20,669
Messages
206,222
Members
8,424
Latest member
justforher

Monty Awards

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


Top