What is this?

[Steve2020]

A few months ago I would find 1 or 2 on the glass when the lights come on. They would retreat to the sand bed and off the glass within a couple of hours after lights on. This morning there were 5 on the glass. I have searched the internet for flatworm photos and can't seem to find any that are perfectly oval shaped like this. My snails have been reproducing every 2 to 3 months but no shell on this critter. largest one I have seen is about 3/16" or 5mm. My tank is LPS and softies and all are happy and non of these critters are on them.
Any idea what these may be?

On glass photo

Out of tank photo

 

[Zach B]

I believe that's a chitton

 

[Steve2020]

I believe that's a chitton

Never thought about them being a chiton. Looked them up on the internet and looks like a baby but no adults in tank?
So is this for sure not a bad flatworm? If not a flatworm I will stop removing them.

 

[Steve2020]

I believe that's a chitton

Thanks Zach for your input. Did some more research on Chiton's and I believe you are absolutely correct.

 

[Zach B]

Thanks Zach for your input. Did some more research on Chiton's and I believe you are absolutely correct.

No problem at all. Best of luck