Good or bad nudibranch hitchhiker?

[Saratj1]

I have a new critter that decided to make an appearance and was wondering what I should do with him? Should I let him be or remove it? I like nudi's but have heard they can be destructive , I don't have a safe place to relocate him to do removal would probably mean death, unless maybe the lfs would take him but I doubt they would b/c they probably don't know much about them.

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[crister13]

It looks really awesome. Usually nudibranch are good as long as they don't get cut up...... And poison the tank.

 

[Saratj1]

Is it eating my zoas?

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[Badfishofbabylon]

Yes, it looks like it. You better get it out and check your Zoas for their eggs, they look little white circles.

 

[crister13]

It looks like a lettuce sea slug in the last pic. If it's that it's good for the tank. Used to have one before it got eaten.

 

[Badfishofbabylon]

It looks like a lettuce sea slug in the last pic. If it's that it's good for the tank. Used to have one before it got eaten.

It looks like a Zoa eater to me. Take a look at the first photo, pretty close. The Feathery Gills are a give away.
http://www.zoaid.com/index.php?module=Gallery2&g2_itemId=415


This what a lettuce sea slug looks like.