Euphyllia flatworm or red planaria?

[Unstoppable algae!]

I have noticed the skin covering skeleton receding lately but figured it was something I caused. Polyp extension still looks great. Today I noticed flatworms on the torch. I don't notice flatworms on the glass, but maybe they are there? Help I'd please

 

[Unstoppable algae!]

Also have not noticed the typical large euphyllia eating flatworms. It is getting dipped tonight!

 

[EeyoreIsMySpiritAnimal]

I have noticed the skin covering skeleton receding lately but figured it was something I caused. Polyp extension still looks great. Today I noticed flatworms on the torch. I don't notice flatworms on the glass, but maybe they are there? Help I'd please

Does not look like a polyclads to me...

Do you have a wrasse in the tank?