Emerald crab

[Damarferg]

Will this crab eat my fish I hope not

 

[mr_X]

If they die it will. I have never seen one catch a healthy fish, nor have I seen one go after a swimming fish.

 

[sanderson417]

I have a few that always try but they can never really grab on to one. They also try to reach at my cleaner shrimp often but are unsuccessful.

 

[Phranque]

Emeralds are typically fish safe, it's just your corals you need to worry about. They are mostly algae eaters, but if they get a taste for soft corals, they can pretty much demolish a colony in short order. It's a dice roll with them..... some report never having an issue, and some are looking to get them out within a day.

 

[woody390]

I kept mine with fish and shrimp and no issues although not sure I'd keep one with a wrasse due to burying itself in the sand IMO