Are These Danio Eggs, Are They Fertilized?

So recently I got a ten gallon tank to upgrade my five gallon, and with it came new fish. One guppy, which died, one Molly, one red platy, two otos, two loaches, and three danios. The Molly spawned and the fry are healthy, the ones that lived, and one of my female danios may have spawned as well. I removed the possible eggs and placed them in a large cup.


Are they danio eggs and are they fertilized? Please help I'm very confused.

 

I can't seem to see any eggs in the picture
(also your tank is VERY over stocked if you wish to discuss it.)

 

Sorry, they are VERY small and clear, similar to bubbles but they won't pop, I've had them sitting for around 24 hours and my danio seems to have thinned out massively after they appeared.

 

I think they're similar to bubbles because they are bubbles. How do you know they won't pop, have you tried to actually squish them?

Danio eggs sink usually.

 

I have tried popping them, usually if they are bubbles they pop when I try to pick them up, these have been sitting here for around a day, and I'm positive my danio DID spawn, so maybe I still need to find the eggs of her. But I still don't know what these are. I know now they're most likely bubbles, but just in case, what else could they be?

 

My apologies I'm very new but very passionate about fish keeping so I'm people to these uh.... dumb mistakes....