White fuzzy thing in my tank

[MerfaSlim]

Hi all.
I've been away for a week and my son has been feeding my fish. Got back today to find something white and furry growing above the waterline. Please see the attached photo. Anybody know what it is please?
Cheers.
Merthyr Slim

 

[Colin_T]

fungus, wipe it off and throw it away

 

[MerfaSlim]

fungus, wipe it off and throw it away

Thanks for that Colin.