Acan eating flatworm?

[nanoreefnewb]

I recently found what appears to be some kind of flat worm on an acan frag which I have had at the bottom of my tank for some time. I did dip the coral before hand so there must have been eggs on the frag.

I haven't seen the worm on the coral however I just noticed it today as it moved along the frag plug. Can anyone id this for me and let me know it is harmful? Any help would be appreciated, thanks.

 

[nanonøkk]

that could be a chiton

 

[nanoreefnewb]

that could be a chiton

Are those usually harmful?

 

[nanonøkk]

Are those usually harmful?

they are a pretty good cleanup crew sometimes

 

[RJ wilson]

they are a pretty good cleanup crew sometimes

If it is; they eat coralline For a primary diet