Some kind of nudibranch.

[groupergenius]

I dip all my stuff before I add and still this clown gets through. The only way I saw him was because he was lit up wicked under the vho actinics.

 

[lion_crazz]

Wow, that is wicked. Never have seen anything like that.

 

[groupergenius]

Was just checking zoa id and it definitely looks like a zoa eater.

Step 1.....identified
Step 2.....eradication time.

 

[flricordia]

I have found different colored nudis on new zoas I have gotten. They seem to take on the color of the zoa they are munching on and the flourescence, but loose it after a short time away from the zoa and return to golden-brown.

 

[groupergenius]

Hey Mike, this guy was the exact same flourescence as an orange ric in the tank. I actually thought it was a baby as it went floating by. Till it hit bottom, stuck, and started crawling away.
Have you ever seen them eating Rics??

 

[reefreak29]

looks like a bergia but its not its eithere a zoa eating or monti eating nudi ,they look very simular , do u have zoas or montis in the tank. anyhow just get rid of it nothing good could come from having it in the tank