Identification worm

[Mickey13]

So my tank has a few types of worms. Possible fireworm (I've had a few small fish just disappear overnight)"¦ bristleworm (silver in color) and also this guy I spotted him on the glass and let him be, asked a buddy in the hobby and he said catch him and get rid of him. Today he was up on the zoa so I grabbed him with a baster.

Is this something I should throw back in or was being on top of the zoa enough to get rid of him?

 

[earwicker7]

It's not 100% clear from the picture, but look up zoanthid eating nudibranch and see if you think they're similar. If so, get it out and start looking for a way to deal with the others you likely have.

 

[Mickey13]

I've had a couple of people tell me it looks like a cucumber. I only caught that one on the zoa one time. I'm going to keep an eye out to see if he gets back on the zoa. I can tell you that my tank is full of these guys and my zoa definitely not doing that great. So it's possible. The zoa came on some LR I picked up and this critter also came on that LR.

 

[Natereef]

Looks like a cucumber because of the legs.