Unknow growth on rock

Discussion in 'ID Needed' started by Giepie, 4 Jun 2012.

  1. Giepie

    Giepie

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    Hi MASA
    Please assist with the id (comon name as well as scientific name) of this growth on one of my rocks. It feels leathery, shaped like a Bulls-eye mushroom, but was out of sight in a shaded area of the tank. This is 1 of 5 pieces of growth on the same rock.

    It seems to have a "feeding tube" (not sure the actual name of it).

    Also, and I might be pushing my luck, is it good or bad

    I will try to downscale the original pic (6.5Mb) to show the entire rock...

    [​IMG]
     
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  3. archiecrain

    archiecrain

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    Looks like a sponge of sorts, normally get get them growing under my rocks, or in low light areas.
     
  4. Giepie

    Giepie Thread Starter

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    Thanks, archiecrain...
    I'm just curious about the name...
     
  5. flipwhip

    flipwhip

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    My geuss....
    Aplysilla rosea - pink sponge
     
  6. Giepie

    Giepie Thread Starter

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    Ah, thanks flipwhip
     
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