Worm iD. plz

[Capt.kid]

Hello reefers,
I'm looking for an id on this worm I found in my frag tank. I know that can be devastating to myself and my animals.
But I'm hoping it's not a bad one. So here are the pics.
Thanks everyone

 

[Reefer5640]

Following

 

[king aiptasia]

I'll need a better pic, flatworms, nemerteans and other oddities are hard to identify

 

[Alexopora]

Hello reefers,
I'm looking for an id on this worm I found in my frag tank. I know that can be devastating to myself and my animals.
But I'm hoping it's not a bad one. So here are the pics.
Thanks everyone

Sure looks like a flatworm. Would rather be on the cautious side and dispose of it.