is this fish egg?

[smokey11]

I saw something like this on the lower corner of my tank last night. I thought it was a new type of mould so I ignored it. But this morning the patch was already gone and I'm starting to think it might have been eggs .

Can you tell what it is?

If these r eggs and it happens again. What should I do to protect them?

I guess taking the pregnant fish out of the tank first would be ideal but how can I know who's pregnant??

 

[butterfly_koi]

Looks like snail eggs to me!

 

[bettaowner]

Fish eggs are usually individual spheares scattered or attached to decor. Snail eggs like these are laid in a gelatinous lump.