Do not buy emerald crabs...

[Crass]

Day 3 and already tearing apart my indo bonzai.

Banished to the sump

 

[Copingwithpods]

I wouldn't go as far as saying never buy them because they do have their charm and their utility but yeah, they don't munch on corals every now and then.

 

[AcroNem]

It can be a risk. Many don't have problems, but it is definitely something people should be aware of.