Zebra fish eggs?

Question
I brought my niece two Zebra dianos almost a year ago now. Recently we noticed that one has gotten quite fat I did some research and found out she was pregnant so I put both the male and female into a small separate tank with gravel down the bottom , she laid the eggs and then after a 20 min I took the male and the female out and back into their normal tank. The eggs are visible down the bottom of the tank mostly in-between the gravel. But it has been almost 5 days since they were laid and they have not hatched I was wondering what the eggs should look like ours look almost like air bubbles clear and little with a even smaller white/yellowish circle inside it. There is no filter in the tank nor heater what should I do to get them to hatch?

also the water is getting a tad clowded should i take som ewater out and put so fresh water in with water ager?

Answer
Hi Nadia,
  There is nothing you can or should do to "get them to hatch".  If they are going to hatch, they will do so at their own pace.  It is very possible that the male did not fertilize the eggs, in which case, they will not hatch.  But you should wait and see what happens.  

 If you want to change some of the water, that is okay.

-- Ron
  rcoleman@cichlidresearch.com
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