What is this?

[scrappy35]

Found this roaming after lights out. Can anyone identify it?

 

[TnFishwater98]

Need a better pic but think it’s a stomatella.
If so no worries.

 

[RSnodgrass]

Stomatella for sure... good stuff! Hopefully you have a few to breed.

 

[WheatToast]

+1 on Stomatella! They are great algae grazers!

 

[scrappy35]

Cool. I saw at least 2 in the tank for the first time. About the size of a dime.