What is this?

Bknitti

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Hello guys! My first question, though I've been reading the forums all the time. Just received some corals from Corals Anonymous and this guy swam of one of my purchases. Any idea what it could be?

16897851675997726564439303016217.jpg
 
Hello guys! My first question, though I've been reading the forums all the time. Just received some corals from Corals Anonymous and this guy swam of one of my purchases. Any idea what it could be?

16897851675997726564439303016217.jpg
Any chance for a closer picture under white lighting? It is hard to make out in this picture.
Did it swim off or float off?

It looks like it could be a small Aiptasia "glass" anemone, but I'm not confident with this ID without a better picture and more information.
 
Didn't look like any brittle star fish I've come across in the past. Wouldn't mind if that's what it was. It did swim though. Can't tell if you can see it in my video.
1689786652306870643737736231411.jpg
16897867162045209232898340495654.jpg
 
Possibly a Swimming Anemone like the one linked below? I know I've seen similar pop up once or twice on here, but I can't remember which threads.
 
My first guess was Aiptasia as they can "swim" to a degree but without a visible stalk any jellyfish or swimming anemone would be my guess
 
Possibly a Swimming Anemone like the one linked below? I know I've seen similar pop up once or twice on here, but I can't remember which threads.
That's what it looks like. Is this good or bad?
 
Hello guys! My first question, though I've been reading the forums all the time. Just received some corals from Corals Anonymous and this guy swam of one of my purchases. Any idea what it could be?

16897851675997726564439303016217.jpg
While I want to say micro brittle star, may also be a sea Spider. Please post another pic under white lighting !
 
That's what it looks like. Is this good or bad?
My understanding is that they're generally considered bad, as they're essentially highly mobile anemones (i.e. highly mobile critters with stings in a closed tank) and may or may not reproduce quickly in tanks (to my understanding, they can reproduce quickly, but I've never seen an infestation - likely because people remove the nems when they find them).

Found one of the threads:
Edit: they are super cool though.
 

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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