do emerald crabs eat sps?

[big o]

my monti. is dying a slow death i noticed my emerald crab on it in early am.is he eating it ?

 

[bayondai]

Mine don't, but I have heard that some will eat the polyps of the sps.

 

[toddius]

More to the point, do Mithrax eat LPS?

I catch mine on my Torch Coral (euphyllia glabrescens) all the time, and although I chalked up one dead head to a tank-cleaning accident, this morning he was on top of another that showed no skeletal damage but suddenly doesn't look long for this world.

Should I exile the rat b*****d? Or am I blaming the wrong culprit?

 

[houstonreefer]

My emeral crab sticks on my birdnest too. So i move him to refu.

 

[Emperator]

check your monti for nudibranchs. they are whitish, about 1/8-1/4" and look kinda furry, almost like mini berghias.

i had a case in which the nudi's came in on a wild montiu, ate through the monti within 2weeks and started to eat my cap before i found the buggers and manually removed them nightly with a tweezer.

i have 6 emeralds in my 100g and although they like to perch in my acros at night, they have not done any damage.

 

[yellowfiji]

Mine ate my polys, so I decided no more crab in my reef tank.