mushroom parasite

[TJReefers]

Is anyone familiar with these creatures growing on my mushroom? At first they looked like shadows, but they move like worms and are multiplying. They are now starting to grow on my other mushroom species.

 

[bradleym]

They look like flatworms, and they'll probably continue to be an issue. Best to kill them with Flatworm Exit.

 

[Crabs McJones]

Flatworms. They'll smother your corals. Best bet is flatworm exit, but be careful as these release toxins when they die.

 

[TJReefers]

Thank you both for sharing. Do you have any experience with siphoning them off corals?

 

[38bill]

You can try that. Another option would be a wrasse that will eat them.