Why is my emerald crab missing a arm?

[lil ape]

I have 2 emerald crabs and one of them is missing an arm and 2 legs and the other is missing just a leg. I tested the water and everything is okay, so do emerald crabs usually tear each other apart.

 

[beadmaker]

what do you have for fish and other inverts.

 

[nick76]

Originally Posted by Lil Ape
I have 2 emerald crabs and one of them is missing an arm and 2 legs and the other is missing just a leg. I tested the water and everything is okay, so do emerald crabs usually tear each other apart.
Its possible they could have gotten into a skirmish if they irritate one another. Any Peaceful species has the potential to defend itself if threatned. The arms and legs can grow back over time. Also if they were stressed anyway I think that can also cause the loss of limbs.

 

[lil ape]

Originally Posted by beadmaker
what do you have for fish and other inverts.
FISH
percula clown
green chromis
INVERTS
lobster
urchin
cc star
sand shifing star
5 snails
cleaner shrimp

 

[1journeyman]

You adding any additives to the tank?

 

[n2theblue]

Could be a molting problem. Maybe you are missing some element in the water that they need to molt properly and the limbs were lost when they were attempting to molt. Just another possibility.

 

[beadmaker]

could be fighting with either the lobster or the urchin.

 

[poniegirl]

I've heard CC Stars are quite opportunistic feeders. There was athread not long ago, I'll try to find it..

 

[poniegirl]

https://forums.saltwaterfish.com/t/235900/how-mean-are-cc-stars