O. aurifrons (Cuban Pearly Jawfish) spawned!

O. aurifrons (Cuban Pearly Jawfish) spawned!

Postby Luis A M » Mon Apr 28, 2008 7:03 pm

I recently obtained a pair of O.aurifrons from Cuba.The two fish were sharing a refuge under a shell at the LFS.
They were placed in a ten gal.with a deep sand bed,so that there was not much free water over it.
I provided pieces of PVC pipe which were completely buried in the sand,at 45º,facing to the front.The fish soon took to them,disclosing the entrance of the caves with sand and pieces of coral and shells.Each fish remained in it´s cave but ocassionally they were interchanged.They share the tank with two C.cinctus and two young S.splendidus females.
Both fish were very emaciated,so I offered them lots of nutritious and tempting items,to help them regain condition.They started eating live adult bs,then mysis, and they were soon taking all kind of food,including dry granules.
In short time,the fish were in good shape and few days ago,the female showed a plump belly,so I started to check the male´s mouth looking for eggs.BTW,there is no clear sex differences in my pair,though the female has a dark mark over the head.The male´s head is slightly larger.It is like sexing parrots,looking at one you can´t tell ,but given a pair you can point who is who 8)
When I checked them today after a week-end out,the female looked slimmer,but the male wasn´t holding anything and came out to eat like usual.I kept watching,and after some time,it came out with a large egg ball distending his mouth.As I moved closer,he dissapeared and soon returned without the eggs.I remained still,and then again the eggs were in his mouth.This was repeated several times.
So this fish,living in a cave,can leave and then retrieve his eggs when he wants to eat or feels threatened! :shock: This is a luxury bangaiis can´t afford! :wink:
This makes me think that egg collection for AI might be possible without having to catch and strip the fish.
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Postby mpedersen » Mon Apr 28, 2008 7:07 pm

Wow, sweet! Congratulations.

Certainly, if the jawfish will easily self-discard the eggs, then the industrious aquarist can simply scoop 'em out and tumble them to hatchy, perhaps like dottyback eggs?

Of course, it's too bad that you don't know precisely when they spawned. Are you going to let them incubate to term and hatch in the tank? Any plans on rearing?

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Postby Luis A M » Tue Apr 29, 2008 4:44 pm

Right,the egg ball could be siphoned out of the cave if the male could be kept away during the process,which seems problematic.I prefer to try the natural way when possible.
I could try them in BRT,with rots.This species and Gramma are said to be raised on rots without much trouble.If I find some time to put everything together... :?
Today they again switched caves.He pops out of his den,once with the eggs,once without (feeding mode) 8) .He threatens his mate with open mouth if she moves close to his (formerly hers)cave.I wonder how he managed to convince her to move with a mouth full ,which rendered him harmless. :?
If I can borrow my daughter´s camera,I will take pics Sunday. 8)
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Re:

Postby mpedersen » Thu May 01, 2008 12:47 am

Luis A M wrote:I could try them in BRT,with rots.This species and Gramma are said to be raised on rots without much trouble.


Actually, when Martin presented at last year's IMAC, I believe he did use some Copepods. I've been handed yet more observations that even simply "supplemental" feedings of copepods during larval development can greatly speed up settlement and survival rates. And YOU have PLENTY of copepods, right? ;)

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Re:

Postby Luis A M » Sun May 04, 2008 8:55 pm

mpedersen wrote: And YOU have PLENTY of copepods, right? ;)

Matt

Wrong :cry: I´m struggling to bring them back,but lost my Parvocalanus.
I think both jaws and Grammas are relatively easy to raise on rots.
Anyway I came back from a long May 1st weekend and the eggs were gone.The female looks gravid again,so will see... 8)
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Postby Luis A M » Thu Jul 17, 2008 2:57 pm

We have a new spawn
My male is brooding again,after two and a half months. 8)
Newly laid eggs are clear/whitish.
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Postby mpedersen » Thu Jul 17, 2008 2:57 pm

Better luck on this attempt!
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Re:

Postby Luis A M » Sat Jul 19, 2008 2:51 am

mpedersen wrote:Better luck on this attempt!

Didn´t have it.Today,two days after,he has a full belly.And an empty mouth. :(
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Postby Luis A M » Thu Aug 14, 2008 2:38 pm

New spawn,about a month later.Hope it lasts longer,though he is playing carelessly with the egg ball ina and out of his mouth when the other fish are feeding :roll:
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Postby Luis A M » Fri Aug 15, 2008 5:00 pm

Still holding 8)
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Postby Luis A M » Sun Aug 17, 2008 11:18 pm

Day four.Now he is leaving the egg ball in the cave and coming out to feed.
Until now he was keeping them all the time like banggais.
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Postby A Wolff » Mon Aug 18, 2008 5:10 pm

Tagging along
This is a serious candidate for my next pair
Good luck Luis!
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Postby Luis A M » Mon Aug 18, 2008 5:40 pm

Obrigado,Augusto :D
are they found in brazilian waters?
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Postby A Wolff » Mon Aug 18, 2008 6:07 pm

Yes, they are Luis!
Quite cheap too..
But the brazilian one seems to have "faded colors"
The blue on the body is a little more "grey", and the yellow is much less bright. Still a really nice looking fish :wink:
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Postby Luis A M » Tue Aug 19, 2008 2:25 am

The eggs again vanished :evil:
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Postby Luis A M » Tue Aug 19, 2008 4:13 pm

Definitely gone :( .In the 4th day.I don´t think they had hatched as I didn´t see larvae or eyed eggs.
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Postby Luis A M » Fri Aug 29, 2008 11:36 am

New spawn,16 days later.
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Postby Luis A M » Mon Sep 01, 2008 2:09 am

Two days after,empty mouth,full belly. :evil:
Actually fuller than the size of the egg ball,perhaps caviar indigestion :roll:
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