Please ID

[gtp0083]

Is this a slug or something. It appeared when I cleaned out my HOB filter. Should I remove it?

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[AlSimmons]

I'm not sure what kind of sea slug that is exactly, but in most cases these are bad and should be removed from the system. Definitely keep your eyes peeled for more from now on. Some of these things can be an absolute terror if they get out of hand.

 

[gtp0083]

It's really tiny. Maybe 1/8". It was barely moving. My wife and stared at it for ten minutes trying to determine if it was actually moving haha. I removed it and put it in a cup until I got an answer.


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[gtp0083]

Another picture

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[gtp0083]

Nudibranch?

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[AlSimmons]

Yeah, Nudibranch, Sea Slug, kind of the same thing.

http://www.advancedaquarist.com/2004/10/inverts

http://www.advancedaquarist.com/2004/12/inverts

 

[gtp0083]

Thanks! It's gone


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[hotelbravo]

I'm not sure what kind of sea slug that is exactly, but in most cases these are bad and should be removed from the system. Definitely keep your eyes peeled for more from now on. Some of these things can be an absolute terror if they get out of hand.

There are many many harmless kinds. This one resembles a small bergia nudibranch. Which would be beneficial and would be a shame to have killed.
Better to isolate and identify rather than remove and kill.

 

[gtp0083]

Oops I isolated searched to the end of the internet with no positive results and unfortunately.... well.... all drains lead to the ocean right?


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[AlSimmons]

There are many many harmless kinds. This one resembles a small bergia nudibranch. Which would be beneficial and would be a shame to have killed.
Better to isolate and identify rather than remove and kill.

After comparing pictures online I don't think what the OP has is a Berghia Nudibranch. Even if it was it really won't be missed unless the owner has an existing problem with Aiptasia. (hopefully not)
I think the best bet here is just to remove it and move on.

http://reefkeeping.com/issues/2004-01/ac/feature/index.php

Btw, here's a thread on Montipora-Eating Nudibranchs too.

http://blog.captive-aquatics.com/captive_aquatics/2010/09/a-montipora-eating-nudibranch-primer.html

 

[gtp0083]

The montipora nudibranch seams to be the best match based on the picture. From what I'm reading it shouldn't be a problem as I don't have a sustainable food source for them. I'll keep an eye out for more.


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