Is this a flatworm or a nudibranch or something?

[paneubert]

Is this a flatworm or a nudibranch or something? Anybody think they want to eat my corals? There are a few crawling around on the glass. Really bright red spot on one tip, and kind of pumpkin orange body. They look really flat, and don't seem to have any legs or anything. I just was messing around with my Cheato last night, and move some into my main display, so I assume that is where they came from. That is my thumb in the picture to give you a sense of size.

 

[Anonymous]

Convolutrilobia sp. (Acoel Flatworm), they feed on algae not corals.

Regards,
David Mohr

 

[paneubert]

Cool, they would look nice if they grew a little bigger. We will see if they survive my fish foraging.

 

[Anonymous]

Cool, they would look nice if they grew a little bigger. We will see if they survive my fish foraging.

It's doubtful any of your fish will eat them as they are toxic and they don't grow any bigger. They are a pest and can multiply rapidly so I would recommend that you syphon out all that you can see a couple hours after the lights come on every morning.

Regards,
David Mohr

 

[Julius]

Yes, Do what dave said or they will smother everything.