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  #1  
Old 09-24-2008, 03:47 PM
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Looks like a Chiton, which are harmless.
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Mike

150g reef, 55g sump, T5's, Vertech 200A, Profilux III - German made is highly over rated, should just say Gerpan made.

Reefkeeper - individual obsessed with placing disturbing amounts of electricity and seawater in close proximity for the purpose of maintaining live coral reef organisms.
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  #2  
Old 09-24-2008, 04:39 PM
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maybe some kind of bubble snail? Does it move? when you say hard, do you mean it has a shell or that it is rigid?
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Old 09-24-2008, 04:48 PM
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Originally Posted by justinl View Post
maybe some kind of bubble snail? Does it move? when you say hard, do you mean it has a shell or that it is rigid?
It's rigid and stuck, does not move.
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Old 09-24-2008, 04:59 PM
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might be a sponge then.
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Old 09-24-2008, 05:23 PM
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might be a sponge then.
I don't see any openings. Don't all sponges have some sort of openings for feeding?
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Old 09-24-2008, 09:55 PM
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It looks like a chitton but they are usually in the sand and not on the glass. If it doesnt move at all I would think it could be a sponge of some type..if nobody here can identify it...razor blade it off and throw it out..

It could be the fish version of "Invasion of the Body Snatchers"
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Old 09-24-2008, 11:30 PM
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No many demospongia do not have any large obvious oscula (big holes). All sponges however have small pores called ostia... not always visible to the naked eye.

I don't think it's a chiton... it hasn't moved any and I don't see any of the shell plates. for the record chitons can be anywhere in the tank but usually graze on rocks.

you can scrape it off, but ten bucks says there's others in the tank you just haven't found yet.
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