Unknown growth

Discussion in 'Reef Aquarium Discussion' started by john pocock, Oct 11, 2017.

  1. john pocock

    john pocock Member

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    I found this growth in my tank. I’m wondering if I should remove it or is it OK? Does anyone know what it is?

    40C91C91-CB0A-476E-B3D8-427AE3EE0288.jpeg
     
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  2. Maritimer

    Maritimer Moderator Staff Member Team R2R R2R Supporter Reef Squad Leader CTARS Member R2R Excellence Award Build Thread Contributor Partner Member 2018

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    Those look rather like (though not identical to) the egg cases of a small local whelk called an oyster drill. Whelks are predatory snails, so often not terribly welcome in our little reefs.

    ~Bruce
     
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  3. john pocock

    john pocock Member

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    Aren’t snails good for the tank? Should I remove this before they turn into snails?
     
  4. crabs_mcjones

    crabs_mcjones If my name was Sebastian, you'd totally help me R2R Supporter Reef Squad R2R Excellence Award Build Thread Contributor

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    Dicathais orbita eggs possibly? If so they're predatory as Bruce said. I'd get them out just to be safe.
     
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  5. Maritimer

    Maritimer Moderator Staff Member Team R2R R2R Supporter Reef Squad Leader CTARS Member R2R Excellence Award Build Thread Contributor Partner Member 2018

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    "Snails" is a pretty big class of critters - kind of like "mammals".

    Bats are mammals - good to have around, as they eat mosquitoes. Sheep are mammals - good to have around, as they keep your lawn trimmed (and keep you warm in the winter, but we digress...) It does not hold true that you want a tiger - although also a mammal - in your neighborhood.

    The snails we pay for in our cleanup crew eat algae, detritus, leftover fish-food. Some of these whelks ... eat the cleanup crew. (As do creatures like tulip snails, pyramidellids and Babylonia . . . )

    ~Bruce

    P.S. & BTW, I think Crabs McJones may have nailed this ID, there . . .
     
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