So I saw two of these this morning before I went to work. The lights were off, and I managed to get one out but not the other. I just got home and this guy was on the glass again. He is about a cm long, and the ends of his "back tentacles" are kinda flourescent orange.

looks like zoa eating nudis that i had, but someone else probably knows for sure

I really hope not! It has been awhile since I added anything and everything aside from one acro has been doing great.

oh man, i just noticed the same guy in my tank (again) last nite! his spines were glowing orange under my actinics. i did some research and it seems like the kind that eats aiptasia. he hasnt eaten any of my corals, so im gonna be observant and wait another few months. i looked into nudibranches a few weeks ago. it was A LOT of research before i found any info that KIND OF resembled the nudi in my tank. sorry i dont have links. if you dont wanna take the risk, remove him. i prefer to leave him. he looks cool as heck. HTH

Well, he is a zoa eater... I found another with even more flourescence by some zoas of the same color. So any tips on the next course of action?

suck out with a turkey baster

He got tweezed! I'm going to pull out all of my zoas, inspect them, and put them in my frag tank. I'm assuming I need to do the same with my palys too. Anymore tips past that.

Manual removal.. you'll want to inspect your zoas for eggs also.. they are tiny!

I guess I will break out the soft bristle tooth brush.

example:

i have them to can you terat the tank for them as bipping is not a option to many rocks i got then out but want to nuke the tank to be shure

Nope.. manual removal.. dipping wont even get the eggs.

wow

In your case I would get a small blue LED and hunt the bastards at night.. you'll get em all eventually. There eyes will fluoresce when you shine the BLUE light on em.

caint we all jrst dwnlood firefox wich has a speel cheeker bult in?

I actually used it to spell fluoresce right

+100

I now have a frag tank full of all my zoas, minus some that were on a big rock. All of them were atleast double checked and I found quite a few eggs. I think I may be alright. There is still a small patch in my tank so I will use that for bait.

That is an aeolid nudibranch, i had one on my green dragon's eyes they eat the zoas and lay eggs on the undersides. I just scrubed them off with a toothbrush, didnt seem to harm the zoas at all. But just make sure to get rid of all the eggs they are a nusiance.

Yeah, so far that is a solid 3 hours of my life battling those bastards.

I got to the point where I was FW dipping all of the zoas in my picotope every day to get rid of those nudis. Not a big deal when there are just a couple but once they start laying eggs it can get ugly... 3 hours is nothing if you can get them all so they don't come back.

shame they eat zoas, its cool looking!

+1. I had one too. HAD!

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They are even cooler looking when they eat all of your super flourescent orange zoas. Whatever color flourescence they eat they then display...

WHAATT!!!
Species tank! you know you want to!

Frag up some zoas and grow them out, then make a tank for them :-D

aw man, now im startin to think i should remove him. but i havent had any losses for the few months ive probably had him. i'd hate to kill him. anyone want him? lol

Too bad there wasn't a natural way to keep them in check but allow them to live. The fact that they fluoresce is really neat.