Crab id, is this bad for a reef tank?

[Shobloth]

 

[sam.basye]

Looks like a gorilla crab- not reef safe.

Similar to my mythrax crab that doesn't bother anyone or anything.

 

[sam.basye]

Tapatalk is not my friend...

 

[Betta132]

I don't think it's a gorilla, no fuzz. I'd say that's one of the more peaceful species, but confirm that with someone else.
However, all crabs (other than filter-feeding porcelain crabs) are opportunistic. If it finds a small fish that's sick or injured, even sleeping, said fish will become a meal.

 

[Calappidae]

Too tiny for me to tell, but belongs in the sump like every other hitchhiking crab bar porcellanidae, Neopetrolisthes ohshimai, and trapeziidae. I don't believe lybia would be found as a hitchhiker but they're pretty safe too.

 

[bluecoyote79]

This may or may not help.


http://www.advancedaquarist.com/2010/12/inverts

 

[Calappidae]

This may or may not help.


http://www.advancedaquarist.com/2010/12/inverts

Calappa flammea* not lophos

 

[peasofme]

probably an acro crab. he's too small to do any damage anyways.

 

[Betta132]

Hmm, he does look like an acro crab. They get less than the size of a dime and they live on corals. They would eat things if they could, but they're so tiny they can't hurt anybody.