What kind of egg is this? Or is it not even an egg?

[Awesomeneptune]

I was just doing a water change on my 60 litre tank when a little clearish white ball came off a floating Java fern, which I was trying to get the algae off. I gently put it back in the tank and manager to find another one in the tank.

In the tank is 1 male betta, 2 false julli corydora, nerite snails, bladder snails and rams horn snails.
They don't look like thr snails eggs though, so are they possible from the corys? Or maybe not even eggs.

(I wasn't sure what section to post this in sorry)
There is also a little white dot in the center of them. I think I might have spotted another one on the back wall.

 

[Lucy]

Looks likes like a cory egg to me.

 

[Awesomeneptune]

That's great, thank you!

Ive got 3 Cory eggs then. They are each in one of those little plastic pots that aquatic plants come in, with a sucker attached so they don't sink. If they do hatch they will definitely be able to get through the holes but they'll have to do for now. 2 if them have some filter floss in the bottom, with a leaf on top so I can see them l, as they weren't attached to a leaf and could fall through the gaps. I've mainly just put them in there so that my betta doesn't eat them as no doubt he's ate some already.

Any idea if they are fertile or not? I've attached a few photos but will try and get some better ones ASAP.

 

[Lucy]

I'm sorry, I don't know.
This might help:
Raising cory fry | Corydoras Forum | 204003
Coradee explains what a fertilized egg should look like.
DoubleDutch can help as well.