nudibranch id

[4218kris]

does anone know what kind of nudibranch this is there all over my zoo's but the zoo's look fine it almost looks like a berghia at least im hoping there so small i cant get a good pic

[LeslieH]

It's an undescribed species of Cuthona that eats only zoas. If you have a lot that means you also have a lot of eggs ready to hatch into hungry juveniles. If you want to save your zoas you'll need to do repeated freshwater dips plus carefully check over the zoas by hand to pull off the adults and the egg clusters. There are a lot of posts about them here on RC. If you do a search for "nudi & zoa" or other relevant combinations you'll be able to read about other people's experiences.

[4218kris]

oh man that sucks iv heard of some wrasse that will eat them it that true

[Grins]

I removed mine as Leslie said and I agree it will take more than one attempt to rid yourself of them. But it can be done.

[BristlewormKing]

Definitely not berghia - sorry 4218kris

[4218kris]

i just bought a sixline wrasse to hopefully eat them or at least keep them some what under control let me know if it should help and can i do a lugols iodine dip on them if so should i full dose of 40 drops per gallon?