What is this worm?

We got an arrow crab for them but it chowed down in so many it got huge and moved on to our shrimp and fish so he got expelled! Thankfully the LFS took him back
I’ve considered getting an arrow crab, but mostly because I like the way they look. The worms in my tank isn’t an issue for me.
 

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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