...this has started to appear on the gravel floor... Help appreciated...

Hoping to (eventually) create a vibrant 'community' tank.
Current set up =200L tank with c.20 Neon Tetras, 6 Platys, 1 Ram.
Filter JBL Cristal Profi e902.

Recently this has started to appear on the gravel floor... anyone have any ideas what it is and how I might remove it?
Many thanks,
Kieran

They look a bit like fish eggs covered in fungus Try using a gravel cleaner on them.

Thanks, I will remove that so with the gravel cleaner, I was concerned it was problematic for water quality (apart from being unsightly?).
So, no 'panic' then...
Thanks.

Actually by my weekend water change, the 'fungus' had largely subsided by itself... but a 20% water change got most of the remnants, I think.