Help ID the flat worms on Goniopora Please XD

[yuzusama]

I kept observing everyday and I didnt see any sign of it, but after a short travel I see packs of flat worms on the polyps of my goniopora, I took a video of it, but they are literally all of it. I am assuming these are the harmful flat warms and should be dealt with? If I am correct what would be the best medication to treat it? I also heard that six-line wrasse would feed on flat worms, is that true and would any other creature be recommended to suppress those worms? Thanks!

 

[Koty]

Wrasses like melanorus, canary, and many others will take care of them

 

[yuzusama]

I do have a yellow wrasse, would he feed on those worms? He doesn't seem to be very interested

 

[Koty]

Reduce his feeding. Maybe they are not a high priority on his menu.