Something weird just happened today.

I use to have 4 Breeding Cories , 2 male and 2 female.

Unfortunately 3 of them jumped out of the tank 1 day when it was accidently left open and they died.

I was left with 1 female and have had her alone for only 1 month now with a albino bn breeding pair.

But strangely today while i came to feed the fish, i saw her spawning and laying eggs everywhere but obviously they were infertile

I thought it was impossible without a male to make the female spawn.

Was it just that she was too full of eggs?

Yes single females will on occasion lay eggs, i seperate males from females to encourage spawning when I join them back together and occasionally a female will lay eggs before i get the males back into the tank. As you say they will be infertile and will fungus quickly.

I never knew that this was possible and had never heard of this happening, just probably she just had too many eggs.

But the bristlenose had a feast on the eggs. After about 3 hrs there was no eggs left.