Hydroids? Feather worms? Aiptasia?

Discussion in 'ID This!' started by Redd, Mar 28, 2016.

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  1. Redd

    Redd Astrea Snail

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    I just noticed an explosion of thousands and thousands of these tiny "feather duster" looking animals in the low flow, shaded portions of my tank (BC29). Their total length has got to be less than 2mm, and have a black dot at the center (possibly a primitive oral disk). They grab at the water and wave naturally, collecting food i assume. I just nuked a very small aiptasia (<4mm) out of a zooa frag last Thursday, so I'm terrified hat these are aiptasia larvae.

    I am not sure at all what hydroids look like, especially when they are this small.

    Literally thousands of them.
     

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  3. Jim Bonds

    Jim Bonds Spanish Shawl Nudibranch

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    It's hard to tell in the pictures. Do they seem to come out of a small tube?
     
  4. Redd

    Redd Astrea Snail

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    It's pretty difficult to tell, Jim. But I would say, no. They are stalked, however, and look like they are pulling food into their mouth and not retracting into a tube, kind of just compressing the tentacles.
     
  5. Jim Bonds

    Jim Bonds Spanish Shawl Nudibranch

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    Hmmm... What do I know, I'm just a lousy engineer. I've asked my brother to take a look. He's a marine biologist so hopefully he can actually put that fancy masters of his to work!
     
  6. Redd

    Redd Astrea Snail

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    Sweet thanks. I need to get a better camera!
     
  7. civiccars2003

    civiccars2003 Great Blue Whale

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    They are most likely feather dusters. Pretty typical when i come to any tank, esp a new tank.
     
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  9. PittsburghReefTank12

    PittsburghReefTank12 Flamingo Tongue

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    Thats strange because I had those and they turned brown and dissipeared. Dont know what they are
     
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  10. DSC reef

    DSC reef Giant Squid

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    Feather worms, nothing to worry about
     
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  11. Vinnyboombatz

    Vinnyboombatz Giant Squid

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    While it is hard to tell. They look like hydroids to me.
     
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  12. Corailline

    Corailline Super Moderator Staff Member

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    It is a dry heat, yeah right !
    I am in the Hydroid camp.
     
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