Lanzo - this is how acropora's polyps look like

Discussion in 'General Discussions and Advice' started by LikesFish, 17 May 2008.

  1. LikesFish

    LikesFish

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    (Not fully extended yet)
    [​IMG]
     
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  3. LikesFish

    LikesFish Thread Starter

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    Oops.. Moderators please move to General Discussions.....
     
  4. Mike

    Mike Retired Moderator

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    moved, nice pic too:)
     
  5. Mekaeel

    Mekaeel Moderator MASA Contributor

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    heres another from my old 6ft tanks
    [​IMG]
     
  6. sihaya

    sihaya

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    I could be wrong... but it looks like you got some little hydroids on that second one. Not all hydroids are bad thoguh. ;)
     
  7. Mekaeel

    Mekaeel Moderator MASA Contributor

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    higly doubt it hey,you should see the polyps at night,thin like in the pic but extend far out
     
  8. sihaya

    sihaya

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    Dude, I'm telling you... those look like digital hydroids. I don't know about the long things that come out at night, but I'm 95% sure you got some digital hydroids there. Generally, those kinds of hydroids are mostly harmless though.
     
  9. mantisfreak

    mantisfreak

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    I'm going to have to agree with Sara on this one. If those were feeding tentacles, they would be extending from inside the "mouth" (septum/gastrovascular cavity). These appear to be coming out of that coral's skin (epidermis)
     
  10. Warr7207

    Warr7207

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    Are they parasitic ?
     
  11. mantisfreak

    mantisfreak

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    Nope....that kind is quite harmless.

    Many hydroids are quite dangerous. Most colonial hydroids are as they sting corals. However, most people have/have had hydroids in their tank at one time or another and it's usually no big deal because once they hit the medusa stage, they end up being eaten or killed by filtration or water movement equipment.
     
  12. sihaya

    sihaya

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    Oooohhh... I see how it is. Y'all don't believe me, but you believe Curt. :p j/k Thanks Curt!

    The digital hydroids aren't always on coral either, they can grow on rocks too. They might not be parasitic, but I think there's likely a reason they seem to like to find themselves on corals. I wonder if they don't somehow use the coral as protection or maybe they feed on some of the coral mucus, or steal food? I don't know... it's a curious thing.
     
  13. Warr7207

    Warr7207

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    It is down right weird. Nice to learn something new.

    And I believed you ;), cause I didn't know any better :p
     
  14. mantisfreak

    mantisfreak

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    This has been my suspicion for ages. That they feed on the bacterioplankton in the mucus nets. But I don't know either.
     
  15. sihaya

    sihaya

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    I personally think they're kind of cool. One of my friends had some that looked like they had little arms and heads. I swear they looked like little aliens...

    Haha, thanks. I like to think I know what I'm talking about most the time... :p At least I'll confess when I don't!
     
  16. sihaya

    sihaya

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    Yep... I share your suspicion... but do we have enough evidence for a stronge case? I don't know... can we put the little buggers on trial?
     
  17. Warr7207

    Warr7207

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    :lol::lol:
     
  18. mantisfreak

    mantisfreak

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    Oh great....a Coral Les Miserable

    :)
     
  19. Warr7207

    Warr7207

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    I would have thought something as obvious as hydroids would have been investigated and documented.
     
  20. sihaya

    sihaya

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    Not necessarily... unfortunately, there's just not much grant money set asside for people who want to study things (particularly "faceless" marine inverts) just out of curiousity.
     
  21. viper357

    viper357 Admin MASA Contributor

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    Great pair you two are :razz:
     
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