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tiny feather dusters popping in and out of rock

post #1 of 5
6/11/11 at 4:41pm
Thread Starter 

i got cultured live rock and i have a piece that have these little tiny feather duster type things popping in and out of the rocks that look somewhat like coral but are definitely not. What could they be?

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post #2 of 5
6/11/11 at 11:12pm

They're moving? Like little waving hands? If so, it could be barnacles. Try this site: http://www.lionfishlair.com/hitchhiker/hitchhiker.shtml  it lists just about every hitchhiker you may ever encounter in your tank(s).

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post #3 of 5
6/12/11 at 8:07am
Quote:
Originally Posted by leanolife View Post

i got cultured live rock and i have a piece that have these little tiny feather duster type things popping in and out of the rocks that look somewhat like coral but are definitely not. What could they be?


It is a U.F.O.

Unidentified Feathery Object bigg.gif
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post #4 of 5
8/3/11 at 5:24pm

It's either a Sabellid or a Serpulid, both filter feeders that are beneficial to your tank! Unless, its aiptasia, which can be a pest.

Unidentified-sabellid-Sabellidae-sp..jpg

Sabellid

serpulid-worm-serpula-vermicularis-photograph-02563-545196.jpg

Serpulid

 

But if it looks like this.... it's a pest anemone called aiptasia... but they won't go in and out of the rocks like the other two... so probably not it.aiptasia.jpg

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post #5 of 5
8/3/11 at 5:27pm

or if its just poppin in and out rapidly than a barnace as btl posted! They dont survive imoe unless ur tank is well established,  of a year prob...

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