Tiny Flat worms?

[Steverd]

These look like tiny flat worms to me, is it time to get out the Flat Worm Exit?

This is a frag tank with only two clown fish, a Small pink-streaked Wrasse and a large Peppermint Shrimp
Then a bunch of snails and crabs. I've never seen the wrasse pick at these on the glass.

Advice please.

 

[Ling_Thing]

I have found those before in my fishless coral qt tank and they never bother the corals and seem to die off eventually or become very diminished with low nutrients. Imo it’s nothing to worry about it’s the large red corals eating flatworms you have to be worried about. These ones feed on micro algae and detritus I believe.

 

[r20crazy]

flat exit.

 

[Steverd]

Any other opinions?
Looks like they are feeding on the glass.
This frag tank is 90% Zoanthids.

 

[Sosuke]

Those were in my reef tank, didn't bother coral really like Ling_Thing said they just seem to die off eventually

 

[CindyKz]

Acoel flatworms. I've had them on and off in my tanks for years. They don't seem to bother anything, not worth the risk of flatworm exit.

If you use your glass cleaner to scrape them off the pink-streaked might eat them out of the water column. I have never seen my pink-streaked eat them but since I added him I don't see flatworms

ETA if they really bother you, you can try siphoning them out with airline tubing. Eventually the numbers should diminish.