New Reef Hitchhiker Discovery

Regardless of it's current size, it bears the markers of a destructive crustacean. It could be the best, mild mannered, Mr. Bean of crabs, but it is still a crab, and the size of the claws in ratio to the size of the body, the black and sharply angled tips, and the body structure tell me that you do not want this getting bigger in your display tank.

At the end of the day, it's your tank, and your call.
 
This is only 1.5cm in size...
1.5cm for now...it won’t be for long. The dip in high salinity water will get it out if you can figure out his rock. You could keep it in the sump if you have one. Would be cool to watch it grow. You will be surprised how big it gets!! If not, there’s a fish store by me who takes all these monster crabs to feed their large predators.
 

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WHAT DO YOU MOST OFTEN NOTICE IN YOUR REEF AFTER LIGHTS OUT?

  • Fish settling into their sleeping spots

    Votes: 15 50.0%
  • Corals extending feeding tentacles

    Votes: 9 30.0%
  • Pods and other tiny life on the glass or rock

    Votes: 11 36.7%
  • Worms, brittle stars, or other cleanup crew

    Votes: 13 43.3%
  • Crabs or shrimp out and about

    Votes: 9 30.0%
  • Bioluminescence (actual light produced by organisms)

    Votes: 0 0.0%
  • The tank looks pretty much the same to me

    Votes: 1 3.3%
  • I rarely look after lights out

    Votes: 5 16.7%
  • Other (Post in the comments)

    Votes: 1 3.3%
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