What is that!! A R2R guide to common new tank hitchhikers.

Lovemyreef2015

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can any one help me? I found a white/opaque worm about 2" long wrapped around my Xenia. it kinda resembles a bristle worm. it has some hair on it and a group of hairs at its head/end. the coral does not appear to be harmed at all. noticed it about a week ago, then again today. when I touch it with tweezers to try to remove it, it darts into the Xenia polyps or the rock. it is lightning fast. please help me if you can, im worried it might be a bad worm
Does it look like this? If so then it is a digitate hydroid
Screenshot_20190407-220921_Google.jpg
 

ccombs

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@Crabs McJones - I want to thank you for this post! I see new members join all the time just to ask about hitchhikers. This thread has helped me immensely in answering their questions and providing advice. Thank you so much for this great post!
 

Heavymman

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I cannot figure this one out at all. I have looked all around and still no idea. It is small red branching on the glass appearing in multiple areas. I’m thinking some kind of tube worm and the red is their “tube”. No idea

886D2578-43B7-4AE1-B1FD-51CDE616A202.jpeg
81A77EB1-6EA6-4B78-89F2-E3F2FD762A7D.jpeg
A07D4CF1-DAE9-42C9-A43D-8D461561D8A1.jpeg
 

KJ

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I cannot figure this one out at all. I have looked all around and still no idea. It is small red branching on the glass appearing in multiple areas. I’m thinking some kind of tube worm and the red is their “tube”. No idea

886D2578-43B7-4AE1-B1FD-51CDE616A202.jpeg
81A77EB1-6EA6-4B78-89F2-E3F2FD762A7D.jpeg
A07D4CF1-DAE9-42C9-A43D-8D461561D8A1.jpeg
Look like Labyrinthulaceae.
 

Matt Carden

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Ok so I have an interesting one. I have this thriving ivory branch hitchhiker coral that has something growing out of or attached to on of the polyps:

20190523_205253.jpg
 

HAVE YOU EVER KEPT A RARE/UNCOMMON FISH, CORAL, OR INVERT? SHOW IT OFF IN THE THREAD!

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