Found these tiny little discos(?)

[SJ701]

Just noticed these pop up out of nowhere on the edge of a plug. Probably some common discos but colors look different and it’s always cool to see something new in the tank.

 

[Coral reefer]

Almost looks a little like baby plates

 

[tribbitt]

Almost looks a little like baby plates

That was my first thought too... would be cool but need sharper pic

The short tentacles on the oral disc make them look a little like fungia

 

[MichaelB]

So cool if they are plates I would seriously be trying to trade you for one.
It's possible based on ridges would need better pictures and maybe a horzontial view of them.

 

[BAYMAC]

looks like baby plat

That was my first thought too... would be cool but need sharper pic

The short tentacles on the oral disc make them look a little like fungia

Yup.

Not uncommon for them to pop up either. I've had it numerous times.