Nocturnal Duncan Coral.

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Polyps retracted during illumination.

Lights out, polyps extend, all night.

First sign of light, polyps retract.

Nocturnal ?

Water parameters all good.
 
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WHAT MOST OFTEN MAKES YOU REACH FOR YOUR CAMERA AROUND THE REEF?

  • Coral behavior (feeding, extension, or movement)

    Votes: 0 0.0%

  • New growth or a color change

    Votes: 2 22.2%

  • Unusual fish behavior

    Votes: 0 0.0%

  • The whole tank looking especially good

    Votes: 3 33.3%

  • Something I want to document in case it changes

    Votes: 0 0.0%

  • A funny or unexpected interaction

    Votes: 2 22.2%

  • I usually put the camera/phone down and just watch

    Votes: 0 0.0%

  • Other (Post in the comments)

    Votes: 2 22.2%
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