Flat worm?

[coralbeauties]

I just dipped a frag I received last week that has been in my qt tank and found this tiny flat worm. It has a forked tail. Should I be concerned?
Thanks
Jeff

 

[AcroNem]

indeed a flatworm. It is likely harmless if it's small, but can reproduce fast and cover corals pretty bad. I would attempt to not allow them in my display. I applaud you for running corals through quarantine as well.

 

[Bio32]

does anyone know if this is a bristle or fireworm? its a zoomed in photo...

 

[ryshark]

does anyone know if this is a bristle or fireworm? its a zoomed in photo...

It’s really hard to tell in those pictures. I recently posted a similar thread for a bristleworm that is very wide like yours here. Does it look like this?

Bad fireworm?

I’ve been noticing a few of these coming out of the rocks lately. So far I haven’t had any fish losses or coral damage I can see. One night a small firefish/dartfish went to sleep right next to the hole of one of the biggest worms in the tank and come the next day the fish was fine. I cant tell...

www.reef2reef.com