Help Required Can you Identify These

[adrians]

Tropical aquarium

These have just appeared on my thermometer and a few places in tank.
Hard to touch but can be removed.

Not sure if they are baby snails or something else.

Thanks

 

[Taldeara]

they look like nerite snail eggs to me, if u have nerite snails they will often lay eggs but they are incapable of hatching in freshwater


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[Mebbid]

They look almost like limpets. Do they move at all or are they stationary?

If they move - Limpets

If they don't and you have nerite snails - Nerite eggs