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I have a male and a female barbatus cory and they laid eggs.
The eggs did not hatch after two weeks. The tank conditions were, a pH of 6.5 to 7 depending on the time of day, a low GH, and a tempeture that started at 70 but gradually moved it up over the two week period to 80 degrees. The eggs neither hatched nor grew any fungus.
What would cause this?

I have successfully breed panda, paleatus, aneus, albino aneus, sterbai, and punctatus corys in the past without any problems.

It sounds to my untrained view that they were infertile.

Breeding acocunt.

The above breeding account doesn't say anything about the time the eggs hatched, so I presume it's similar to other Cory types - as if it was "very much longer than normal" it would be something worth writing about. But I'm only guessing...

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Mats

if the corys are from Czech rebublic and hormone breed it is wery common that the eggs doent hatch.it is sad but true.

The temperature sounds sort of high for S.barbatus. Please correct me if I'm wrong. I have (6) sub-adults. What age did you notice yours starting to breed? Although the S.barbatus I have are not yet grown, I'm noticing them cleaning the glass and acting as if they're going to breed after water changes. But, they're much too young!
Amanda

It sounds like the eggs were not fertile. Were the eggs clear and then turned wither in color? Although 80 degrees is warm for barbatus I do not think that is the cause. I spawned barbatus over the summmer in my fish room with the temperature inthe high 70's.

Mark

The barbatus are about 2.5 inches and they were with a lot of fancy plecos and some small south american cichlids. They laid the eggs in the late evening. I had done a large water change the previous day. The next morning almost all of the eggs were the translucent brown color of fertile eggs.

Is 18 months of age about average for sexual maturity?
Amanda

I bought the ones I have now about six months ago and I am not sure how old they were when I got them. When I bred my first batch of corys they were the albino aneus corys the offspring of that batch that I kept grew to about an inch and a half and laid eggs the following year which were fertile but they were also mixed with a few older corys to prevent inbreeding. I am not sure how much different the barbatus are. What do you feed your barbatus? I feed mine every day but sunday and they get feed a wide variety of prepared fish foods such as flakes and pellets once daily, and I feed a wide assortment of frozen foods two or three times a week.

Gomez

I put the barbatus corys in their own ten gallon tank and friday the 22nd they laid eggs. I left the parents in the tank and they laid another group of eggs saturday, and today, sunday, I removed the parents. I had noticed saturday that a few of the eggs turned white, and then when I moved the parents sunday the eggs that had turned white have been eaten by the parents. I have never seen this happen with the other corys before. I was wondering if the parents will clean the eggs or remove the "bad" ones for the safety of the good ones naturally.

Gomez