• 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.

[Cuttlefish Eggs]: Jabba, Jool, Ziro, Zorba - S. Bandensis

DWhatley

Kraken
Staff member
Moderator
Joined
Sep 4, 2006
Messages
20,925
I have often thought that our languishing 140 would be ideal for cuttlefish but did not want to go through the hassle and expense of raising new hatchlings. Several weeks ago I spent some time cleaning up the pentagon tank in the dining room but with no real intent. Being cephless for several months (longer than at any time since I have kept them), not finding an animal I was comfortable buying and a post in the availability thread sent me down a path of no return and my 6 cuttle eggs were delivered today from Blue Zoo Aquatics.

I contacted @Bret Grasse MBA for instructions on his soda bottle bubbler but thought my eggs would likely be closer to hatching than the time when it would be helpful. However, when the eggs came, they were still very opaque so I decided they may fare best if tumbled for awhile. I did not have the components on hand so I am experimenting with a net and an air stone. The attached photos and videos are how I spent my day. Suggestions from others who have successfully raised them from this stage would be much appreciated (@Thales, @cuttlegirl ...)

Incubator Attempt 1
First I tried placing the air stone underneath the netting. This was a no go because the net is finer than the bubbles so that air would become trapped underneath and then explode through the netting with enough force to exit the tank.

Incubator Attempt 2
Plain net with air stone placed inside. The weight of the air stone pulling the net caused the eggs to line up along the edge but not circulate. Photos is interesting but not very descriptive :oops:

DSCN1223.JPG

Incubator Attempt 3
I stacked two grids in the net (nets have a post to allow supporting the top grid) and sandwiched the air stone between the grids, placing the eggs on top. The current worked well to move the eggs but I became concerned about abrasion from the nylon grid.

bubblerTwoBottoms_01.JPG

Incubator Attempt 4 (current configuration)
I placed one nylon grid underneath the net and secured it with a zip tie then placed the air stone on edge along the side of the net and tilted the net slightly toward the air stone. This does sweep the eggs up into the circular bubble stream at different points in time. They will circulate for awhile, fall where they are out of the motion and eventually get knocked by another egg back into the stream. I am still a bit concerned with abrasion as the eggs are lifted but the video suggest they don't actually touch the rough surface of the air stone.
bubblerOneBottom_01.JPG


Suggestions and comments requested!!!!
 
Last edited:

DWhatley

Kraken
Staff member
Moderator
Joined
Sep 4, 2006
Messages
20,925
I wondered about any advantage to doing this with the bandensis and asked Bret if he had used his tumbler on this species (he confirmed). I think I have lost one from abrasion and turned off the circulation the AM. I also am concerned about the amount of light they receive since they usually hatch in the dark and am going to move them to the back wall and cover the top to darken the environment.
 

Dools

GPO
Registered
Joined
Dec 6, 2002
Messages
135
Not sure if it will work for the eggs, but I used a plastic critter ball as an attempt to give Kobe a toy. He never took to it, but they tumble very well from the circulation of the wave makers. They come in all sizes, clear and colored. Maybe putting an egg in each one of those would keep them isolated and better protected while tumbling through your tank. Also, maybe using dark colored ones would help with your lighting concerns.
 

DWhatley

Kraken
Staff member
Moderator
Joined
Sep 4, 2006
Messages
20,925
Well, I was sure I had at least another week but NOOOOO. I ordered fiddlers from Paul Sachs on Sunday because I am hoping for an O. briareus this week and won't know the size but did not order mysis. I think the egg I thought ruptured actually hatched or was in the process of hatching because early this AM I looked in on the net and found two tiny critters. Tonight a third has hatched and I still have 3 fully inflated eggs. I know they don't usually eat for the first couple of days and my first mysis should be here by Thursday. I am adding Cyclop-eeze to the net (we feed this to the tank anyway) and started a batch of brine (I KNOW, I KNOW but that is all I have in the house and my Tigger pods died in 24 hours - no clue why).

@cuttlegirl, the deflated eggs have a white/clearish gelatinous mass inside. Is this normal? The hatchlings look fully formed but with octopuses, all that remains is a thin skin. I don't see any yolk sacks so I am assuming these are not preemies. They sure are TINY!

DSCN1229.JPG DSCN1234.JPG

@TMoct 's close ups are soooo good and I was totally frustrated failing to focus with my macro setting that I went looking for a macro lens solution for my camera (Nikon P7100 - high end point and shoot, not DSLR). After a bit of reading and scrounging through my camera "stuff" I found out I could pick up an extension tube to fit my camera and use my (very) cheap macro/wide angle lens set from two camera's ago. For $8.00, I am excited to try it ($5.00 if I wanted to wait for shipping from China). In with the macro/wide angle lens I found a bunch of miscellaneous used filters I had acquired so I will experiment with trying to compensate for the red light (I believe I tried this years before without success though).
 
Joined
Sep 16, 2005
Messages
4,936
Oh, so cute. They have good color. I forgot how tiny they are...

D, are the deflated eggs the ones that hatched? Eggs that have died during development will have a whitish mass inside of them. How many eggs do you have?
 

DWhatley

Kraken
Staff member
Moderator
Joined
Sep 4, 2006
Messages
20,925
This is what is odd. The 3 eggs that have mostly deflated have a whiteish gel inside but they have to be the egg casings from the ones that hatched. Today there are still two very firm round eggs, one that has deflated some since last night, three eggs that are open, shriveling and have jelly, and three hatchlings.

All three (I keep looking for a fourth because of the newly deflating egg) change color and hover from time to time but stay mostly along the net framing as in the picture. I have been putting pinches of frozen Cyclop-eeze into the net every 3 or 4 hours and at least one seems to go to the netting where it would be blown before leaving the net. My first order of mysis should be here tomorrow and none of my (very, very old) brine have hatched.
 

Latest Posts

Forum statistics

Threads
20,730
Messages
206,315
Members
8,428
Latest member
Konkong555

Monty Awards

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


Top