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babies hatching, help

Korndog

Pygmy Octopus
Registered
Joined
Apr 4, 2006
Messages
7
Hi,

After finally figuring out what these strange egg shaped items were in my tank, I've noticed that they have started hatching. I turned off the power head in the tank and turned down the flow from the canister filter. The reason I knew 2 of the little guys had hatched is I put some mysis in the tank to feed my seahorses and 2 of them came out and actually grabbed on to some mysis and looked to eat it.

Here is the short version of the story;

I purchased an octopus from a wholesaler around 2 months ago. I brought her home, acclimated her, and turned her loose in the tank. This was at night so I did this and went to bed. I NEVER saw her again.... well, after having an empty tank for 3-4 weeks I decided to put some seahorses in the cube. About a week ago I noticed some strange egg like things floating around the tank. I posted some pics on RC, finally figured out what they were, and this is what I now have.

Here are some pics I was able to get.









help? :smile:
 

OB

Colossal Squid
Staff member
Moderator
Joined
Oct 19, 2003
Messages
3,101
Little octo's! And of the non planctonic variety by the looks of it! There should be a chance of survival, no? Will the experienced octo-breeders please stand up? You've seen them "pounce" Mysids, at least that should be a good sign :biggrin2:

PS: When you nay "NEVER", do you mean not even as sad remains? :shock:
 

Neogonodactylus

Haliphron Atlanticus
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Moderator
Joined
Mar 17, 2003
Messages
662
I'm not sure what you want help with. This time of year Octopus mercatoris are popping up everywhere and the females often lay very soon after settling into a new tank. The eggs are not laid all at once, but over several days, so hatching will continue for at least a while. Since this is a big egg species without a planktonic stage, the juveniles are fairly easy to rear. Your biggest problem will be cannibalism. The second problem is that they are nocturnal and secretive, so it is difficult to tell if any are still alive. They will eat most small crustaceans. Mysids, amphipods and even adult brine shrimp (preferrably with a nutrient dip) seem to work well. Be sure to cut down the flow, reduce light levels , and protect all water intakes with filters to prevent them being sucked up. I find that foam fitted over the intake works very well keeping even the smallest octopuses from entering.

Roy
 

Korndog

Pygmy Octopus
Registered
Joined
Apr 4, 2006
Messages
7
I havent seen the mother since day one. Each night for weeks I would randomly scount the tank with a blue LED flashlight .. looking for a sign, ANY sign ... nothing .. I did, although noticed a small collection of empty snail shells in the tank .. probably 5-7 shells. I havent noticed any new empty shells in weeks, so I assumed she was dead and added some ponies and a starfish.
 

Neogonodactylus

Haliphron Atlanticus
Staff member
Moderator
Joined
Mar 17, 2003
Messages
662
Brooding O. mercatoris females don't turn off feeding as completely as do many other octopus. They will continue to accept food for at least a couple of weeks. However, they usually will not leave their den to forage once the first eggs are laid. If she isn't already dead, she will die within a week or so of the last eggs hatching. The fact that some of the eggs are floating around loose suggests that her den was disturbed.

Roy
 

Mizu

Vampyroteuthis
Registered
Joined
Jul 27, 2004
Messages
268
ok then
you should check your protein and ammonia levels if you ahve a decaying body in there its going to mess with your chemicals BIG time.
try to find the body and remove it (if the other critters have not already done so)
RIP Moma Octo
also try using a red led when scouting
hear tell that sea critters are less trouble by light in the red specturm.
keep pumping in the food for them and try to get one or two into a breeder net.
best of luck to ya
 

Korndog

Pygmy Octopus
Registered
Joined
Apr 4, 2006
Messages
7
I have looked EVERWHERE for a den .. Ive seen photos of what it looks like when an octo. lays eggs, and that is nowhere to be found. Whats even stranger is, one day I will see 10+ eggs rolling around the sand bed .. then the next day .. 1 .. maybe 2 eggs .. then 5-8 the next day .. then 1 ... and so on. I do have several smaller bristleworms in the tank, but I wouldnt think they would be eating the eggs.

Like I said, I have (to the best of my ability) searched everywhere for the eggs... and I cannot find anything.
 

OB

Colossal Squid
Staff member
Moderator
Joined
Oct 19, 2003
Messages
3,101
That is weird... There should at least be a body. Remember octopus are able to squeeze through any hole larger than their beaks; you may have to look for the not so obvious locations?
 

Korndog

Pygmy Octopus
Registered
Joined
Apr 4, 2006
Messages
7
the mystery remains. Before I put the seahorses in I actually rearranged the rocks (few weeks ago) and dug around one last time for the body of the female .. nothing .. the top of the tank is sealed .. no way out .. and there wasnt anything on the floor, either. She was fairly large, her head was about the size of a ping pong ball.

Who knows... :smile:
 

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