Six Shark Eggs

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Your eggs look like true catshark eggs, most likely Coral Catshark (Atelomycterus marmoratus) based on what is commonly available. Sounds like you got a great deal on the six! In your pictures (post #25) it looks like all of your yokes have dropped, which would indicate that they have fouled. The only one that looks like it may not have would be the third one from the left - which might be the dented one (hard to see). If that one still looks good, you may want to take it out of that box resting on the bottom and have it clipped directly to the tank, higher up in an area of better flow. I have found that they go bad if there isn't enough oxygenated water circulating on them, which could explain what happened to the rest. If you still have a good one, you will eventually start seeing blood vessels appear on the yoke, and before long you will also notice the embryo. Good luck!

Here is a pic of one of mine, which is a captive bred Coral Catshark. That red arrow is pointing to a tiny sliver which is the forming embryo. It's not the clearest picture, but if that was a video, you would see it twitching about.

 
Thanks for the picture. I am not sure if it was you but someone posted that picture on reef central. How long didnit take from that point until you saw some movement?


The shape of the yolk is annoying me a bit. It does have that droppyness when vertical but gets the oval shape when horizontal. The has a egg crate top on half and half open. My overflow tubes drop in over the box and there is a powerhead in it. I will move a few eggs outside the box. Its not good to put all your eggs in one basket. I guess I am going to have to wait to find out if the eggs are good.

This one is clipped on a slant. The yolk as a slope to it.


Here is the same egg which was slanted and the dented one. I didn't want to mess the the eggs to much so I only took two out. I did tilt one and it looked like the yolk was cracked, but it was hard to tell. The one I tilted and think might be cracked was in the tank not in the picture below.

 
I've only posted that photo on the MBI site, I don't post on reefcentral. Someone on MBI must have thought it was cool enough to share.

The way you describe that box, it sounds like there's good circulation in it. That slanted egg in the pic's yolk does look really sunken however. Does the yolk look chaulky? Not the best term, but that's the only way I can think of to describe it. The bad yokes get a powdery appearance inside the yolk itself as the egg is rotated. Good yolks have more shine to them and stay intact. Give them a few days to a week or so and see how they look. As long as they aren't leaking, you should be okay if they end up being bad. I'm sure tomorrow zoodiver will be looking at your more recent pics you took and will have a better idea as well.

Here are a couple pics - first the good one. It was laid on 1-10-14. Notice the redish stripe that goes through the middle. This is one of the veins forming and will be where the embryo will grow out of. This starts within the first couple weeks or so after being laid.


Here is a bad one, laid sometime between 12-02-13 and 1-05-14. I found it under the parent's cave so I didn't get an exact date. I don't think it got enough circulation where it was at either. The yolk is spread out more and is "chaulky." That part doesn't photograph well. No signs of anything developing.


I need to work on getting them photographed upright.
 
I just went to check the eggs out and I think I see a little shark swimming around. I can only seen into 2 of the eggs because of the way they are arranged. I don't want to mess with the eggs and take them out yet. When it gets darker I will get some better pictures maybe send in the underwater camera. Here is what I just took,



[video=youtube;HEGA2bM_DA8]http://www.youtube.com/watch?v=HEGA2bM_DA8[/video]
 
I know the video is not the greatest, you can see the white line in the middle above the yolk.
 
Curiosity got the best of me. I didn't want to move the eggs but I pulled two of them to get a better look. One has a weird shaped yolk and one has a little fetus swimming around. Its pretty crazy how that came from one microscopic cell.


 
This is so neat I hope they hatch for you
 
Congrats Cu455 that's great news, I saw something moving in the egg case as well:D
 
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