Slug or Flatworm Id

[purplecatfish]

If possible. I'm not sure which it is. I can't get a clear pic because my camara doesn't take tank pics all that nice but let see if I can discribe it.

They are small probably 1/4 of an inch long, look white on the glass. One that is in a peice of coral looks to have a green tinge to it. The anteni (sp) are the same color but have black tips. I just noticed them today but I'm assuming they have been in there for a while. I haven't added anything new for a while. I don't mind them being in there if they are unharmful but I'm wondering.

The coral they are on that I can see was a peice of clove polop. It was doing great then all of a sudden seemed to die off. That is the only peice of coral that I have lost. Are these the culprits or could it just be something else.

I'm sorry for the vageness of this. I have not asked a lot of questions because I usually research to find the answer but can't find any answers on this one. If a picture is necessary I'll try but don't think it would be all that helpful with what I'll get out of it.

 

[greenbean36191]

Normally IDing slugs without a picture is impossible but the disappearing clove polyps and white slugs with prominent antennae sounds to me like an arminid nudibranch. They're predators on soft corals.

 

[purplecatfish]

Thanks for that name. I did a google search and found an a post of sorts that had the exact same thing going on with the same type of coral. I'm sad that I didn't notice them earler, I really like that coral. I'll call this lesson learned.

Thank you.