Arrow Crabs

[markprior22]

Are Arrow Crabs Good For Tanks if they are what do they do if there not why not

 

[reefreak29]

there good to eat bristle worms,when they mature there known to eat small fish

 

[dmjordan]

arrow crabs get fairly large and will start picking on and eating your fish. they are also not from the reef so i am not sure how they would do with corals (if you have any). you can only have 1 unless you have a very large tank.