What is this favia doing?

jeffchapok

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Earlier tonight I spot fed my corals with Reef Roids. Normally I do it in the early afternoon, but decided to wait a little later this time, as I noticed some corals seem to extend their tentacles more at night.

After I fed them, this favia had two very distinct and separated mouths, which opened widely for a few minutes. I've never seen it do this before, although I've only had it for two weeks.

Over the next 30 minutes or so, the two mouths drew closer and closer together until they now appear as one. Is this normal, and if so, what is it doing? I don't suspect anything is wrong -- I've just never seen this before and found it quite curious.

IMG_20191211_220959372~2.jpg
 
15 minutes later, back to normal.

This fishy stuff is weird.

IMG_20191211_223534810.jpg
 

IF YOU HAD TO TAKE A REEFING EXAM, WOULD YOU PASS?

  • Yes!

    Votes: 32 45.7%
  • Not yet, but I have one that I want to buy in mind!

    Votes: 9 12.9%
  • No.

    Votes: 26 37.1%
  • Other (please explain).

    Votes: 3 4.3%

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