Not sure what this is

[Cheryl’B]

Good, bad? definitely ugly

 

[Lovemyreef2015]

Nudibranch bad guy.

 

[Richard the Reefer]

100% bad

 

[DSC reef]

Zoanthid eating nudibranch. I'd get rid of it and keep an eye out for eggs.

 

[tdileo]

I’d check your zoas/montis for more and eggs. I’m no nudibranch expert but I know it’s likely one of the two. Definitely bad as stated above.

 

[Cheryl’B]

Do you think an iodine dip will help?

 

[KJ]

Do you think an iodine dip will help?

Yes bud no kill zoanthid-eating nudibranch eggs, so you should repeat the treatment again in one week to kill all of the newly hatched adults.

 

[KJ]

Zoa eating nudibranch.

 

[Cheryl’B]

Thanks all!