Tiny jellyfish?

Discussion in 'Invertebrates' started by jpg29, 16 Nov 2007.

  1. jpg29

    jpg29

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    I have some tiny 1 to 2mm, white and clear, jelly fish (10 to 20) living in my nano(and in the filter), what are they and will they do any harm?
     
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  3. Galibore

    Galibore Retired Moderator

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    jpg,

    Are they free swimming or against the glass?
     
  4. jpg29

    jpg29 Thread Starter

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    they are free swiming and sometimes they attach them selfs to objects for a short period of time, < hour or so...
     
  5. charlesr1958

    charlesr1958

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    If they look like this :

    [​IMG] Then they formed from this:

    [​IMG]

    Or if they look like this:

    [​IMG] Then they formed from this:

    [​IMG] [​IMG]

    For more information / photos, please see my Hitch Hikers Odds & Ends Page.

    Chuck
     
  6. Alan

    Alan Admin MASA Contributor

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    jpg, as a matter of interest do you use NSW or Salt Mix for water changes? I use NSW and often end up with small jelly's in the system, unfortunately they don't last to long.
     
  7. jacquesb

    jacquesb Retired Moderator

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    Hi guys - aren't these hydroids? I am quite sure that I have read somewhere about hydroids (and they look like this)....
     
  8. jpg29

    jpg29 Thread Starter

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    Hi, I use Salt Mix (Ocean Marine or something like that), I'm in JHB.
    I don't know if they are true jellyfish but they swim with jellyfish type motions i.e propel them selfs the same way.
     
  9. Alan

    Alan Admin MASA Contributor

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    LOL, okay just checking.
     
  10. jacquesb

    jacquesb Retired Moderator

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    Hydroids come from certain types of live rock. I am not sure if jelly-fish would come as "hitch-hikers"....
     
  11. Tridan

    Tridan

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