Crayfish has eggs, are they fertile?

[Malakaiea]

So my blue crayfish overnight laid eggs. I woke up and saw some eggs on the gravel floor and also some still attached to her she wasn't like this yesterday and I assume because they are not attached they are not fertile right? I read they are suppose to stay under her until they molt two times but this just happened overnight and they are already released. 

[gardenman]

Silly question, but do you have a male in with her? If not, then the eggs aren't fertile. If yes, then they could still be fertile.

[Malakaiea]

@gardenman No male so I figured not! But I read somewhere they could hold sperm for months. She was alone in her tank when I purchased her though and shes released the eggs and I read she holds onto them until they hatch so I assume they are not fertile.