Two females=eggs???

[Jazzey]

Hi guys and gals,

I have a really strange question for you! I was going about changing the water ect, ect this morning in my girls tanks and lo and behold I found an unfertalized egg!! They have never been with a male and I know for sure I have two girls, so is this normal?? Has anybody else had this happen?? I want to breed them but needless to say I was vary shocked when I found the little discovery.
THanks for any advice you may have on why one of my girls dropped an egg.
~ Jazzey