ID Needed, Good or Bad

I see he will eat everything even anemones, fish ?

 

sting ray can you get a pic of it with maby a little less lighting and the flash so we can see its true color as it looks kinda skewed by the tank lights

dose the crab have black claws if so get it out they are killers

 

Soon as i can will get another pic up, have not seen him in his cave for 2 days,maybe he moved, will keep an eye out and submit pics when possible, cheers guys

 

Heres a good crab ID site.

OH yeah...pull that crab outta there...no good!

Crab Hitch Hikers

 

I am now aware of the crab being no good but still unaware of why???
Will he eat everything, fish, shrimps, worms, anemones, corals, he only comes out at night ??? why is this crab so bad?

 

This is the crab that most closely resembles the one in my tank

Actaeodes tomentosus Guam 782-12

Could even be this one only purple in colour, same body, leg shape

Liomera stimpsoni Guam 456-26

Its definately a Xanthidae crab of some sort...

 

COPPIED FROM THE CRAB ID PAGE



The Xanthidae Crabs (link - extensive photo gallery) None of which can be considered reef safe and can be the most destructive of the crab types. While very small, they seem to pick at algae on the rocks, but just as with other crabs species, once they gain a bit of size, their ability to pick off and eat any number of invertebrates and corals also increases. They also have a bad habit of enlarging their hiding places within live rock and will, in due time, weaken the rock considerably.
Below, a commonly found Xanthid species living within live rock.

 

Thank you tazzy,.soon as i can locate the litte bugger again i will rip him out of his hideing hole,i may have to remove the rock to get him out,i must be blind, just gonna pop down specsavers....lol

 

google stone crab or gorilla crab.