Good or bad crabs ?

[BillyBay]

I just found three of these in my tank. Managed to get one out we obviously have not bought these we know it came from the Live rock. can anyone tell us if these are good or bad ??

 

[Kio707]

Bad..,

 

[Kio707]

Spiny crabs.

 

[BillyBay]

Do they eat corals?

 

[Kio707]

Yes...,

 

[BillyBay]

Omg should I buy a trap or something? Any advice on how to get rid of the little suckers ? I am only a few months new and would appreciate some veteran advice

 

[CaptainJugz]

Good, bad...depends on what you have in the tank. A crab does what a crab does- eat opportunistically. I have a few that live in harmony with many hard and soft corals, but they are fed on the reg and do not need to eat my precious coral. Don't kill, facilitate.

 

[BillyBay]

I have caught these two so far, is the black one just as bad? , I have a sump I can put them in, would that work? We have rocks in there they can hide in

 

[BillyBay]

This is the black one

 

[Kio707]

I have caught these two so far, is the black one just as bad? , I have a sump I can put them in, would that work? We have rocks in there they can hide in

Sump is good idea.

 

[Starchar]

I like the sump idea too. The best part of saltwater is the unexpected finds.

 

[mrwizard]

Yeah sump is good for crabs, I had two hitchhiker crabs, caught the biggest one who now lives in the sump happily and the other is too small to harm anything at the moment so I'll leave him be, for now. Lol.