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MadReefer 
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 Topic: Sea slug ID
Posted: December 20 2007 at 11:49pm |
Anyone know what kind of sea slug this is? What does it eat? Attached is a picture of its belly on the glass. It's the best pic I could get. The slug is about 3mm long.
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jeffras
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Posted: December 21 2007 at 1:47am |
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My guess is berghia. If so it will only eat aptasia and will starve if you don't have any in your tank. They are easy to breed and are worth some cash to other members if you can keep it alive.
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Jeff Rasmussen
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Boomer
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Posted: December 21 2007 at 12:38pm |
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It is hard to tell, need a good top view, as there are others that look like this but it may well be a Berghia as Jeff has stated.
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MadReefer
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Posted: December 23 2007 at 12:22am |
Here are some new pictures. I'm guessing it came from my live rock and has been in the tank for 3 months. But it could have been much less if it came on something else. I hope it came from the rock because that would mean that it is finding food, I hope.
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Mike Savage
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Posted: December 23 2007 at 9:42am |
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MadReefer
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Posted: December 23 2007 at 7:43pm |
Thanks Mike.
Here's another.
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MadReefer
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Posted: December 23 2007 at 7:50pm |
While I'm at it, can anyone tell me if this is an amphipod, copepod, or isopod? My clowns and cardinals do not eat them but they love eating the little copepods. This pic shows the unidentified at about 2mm long.
Edited by MadReefer - December 23 2007 at 8:08pm
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Mike Savage
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Posted: December 23 2007 at 8:06pm |
It looks like an isopod to me.
Mike
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MadReefer
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Posted: December 23 2007 at 8:10pm |
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That is what I thought. Don't they tend to be bad?
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Mike Savage
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Posted: December 23 2007 at 10:09pm |
Nope. They tend to be good. 
Mike
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MadReefer
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Posted: December 24 2007 at 10:18am |
Thanks Mike,
You were right. The isopods are herbivores in the munnidae family, commonly called munnids. Lynn from WWM sent this:
General info about halfway down this link at "Herbivorous Isopods":
http://www.ronshimek.com/Animal%20Groups%204%20Crustaceans.htm
Now I just need to know about the sea slug. If it does eat aptasia then someone needs to take it off my hands. I don't have any aptasia.
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Mike Savage
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Posted: December 24 2007 at 10:35am |
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MadReefer
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Posted: December 24 2007 at 3:28pm |
I still can't find any info on this slug.
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Mark Peterson
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Posted: December 25 2007 at 11:42am |
Look up "Nudibranch" pronounced nudi-bra-nk. It's the name for pretty sea slugs. There are hundreds if not thousands of types. Most are okay in a reef. Enjoy. 
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MadReefer
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Posted: December 25 2007 at 9:43pm |
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I figured sea slug and nudibranch are basically synonymous. And I just want to know what this one eats with certainty so that it has a chance to survive. They tend to be specialized eaters.
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pa_reptileman_4
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Posted: December 25 2007 at 10:44pm |
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well its funny i have ben away for the past 2 weeks and i come home and i read this earlier today, well i was mesing in my tank moving corals that had gotten knocked over and i found one that looks almost like this one cept it is a blueish purple with many more spike like things on it, it was hanging out on a piece of dieing encrusting monti, he whole body had the funny shaped spikes on it and beside those i could only see the feelers on the head...
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pitiful guppy tank.
shane
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Mike Savage
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Posted: December 25 2007 at 10:54pm |
Frequently they look very much like the food they eat. So much so that they can be mistaken for part of it.
Mike
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MadReefer
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Posted: December 25 2007 at 11:30pm |
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Do you know if they would take the color of what they eat and so the same species could look very different in color?
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jeffras
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Posted: December 25 2007 at 11:33pm |
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Your best bet to get an id is here http://www.seaslugforum.net/
Edit: I would post your pics there.
Edited by jeffras - December 25 2007 at 11:33pm
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Jeff Rasmussen
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pa_reptileman_4
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Posted: December 26 2007 at 12:11am |
mad reefer i would say it is in this family Eubranchus it looks similiar to the others in it. for example...
http://www.seaslugforum.net/factsheet.cfm?base=eubrfarr
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pitiful guppy tank.
shane
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