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These are not infertile as the tadpoles are visible within them, these are aborted, or "bad" eggs.
Aborted in this usage isn't correct as it provides the wrong "context", aborted eggs are those that are laid outside of a breeding situation (this is seen in frogs like some mantellas and Ceratobatrachus) where the eggs are laid randomly.

What you have are eggs that died for one reason or another and the cloudiness is not a fungal attack but is due to enzymatic and bacterial breakdown of the membranes.

There is good data that one of the most common causes of this is due to improperly supplemented adults.

I don't think this deserves a sticky as the context is incorrect and it doesn't really document anything unusual.

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