how big is a "big" Sally-Lightfoot?

Hi Everybody,

I have a Sally-Lightfoot crab that has a roughly 1" carapace. She's always busy picking over the rocks, powerheads, heater, etc...I've never seen (keyword seen) her do anything aggressive towards my fish or other inverts, and I wouldn't say there's any evidence either. I feed her bits of krill or salmon every now and then to keep her happy. That having been said, I've been reading a lot on the forums about Sally crabs becoming aggressive as they get larger. What do people consider large? I'm in the planning stages of a sump/fuge, should I try to relocate her before something goes wrong?

 

ive got one in my tank thats pretty good size been in there for ever dont seem to bother any thing

 

They grow to almost a foot in diameter on the Solomon Islands. I think its the Solomon anyways. Too much national geographic.

 

My lfs has some that are at least 4 inches in diameter...

 

I've had mine from the beginning of my 55 and one is hitting the 5" mark and the other is about 3 1/2" and they have never(over a year) bothered any other tank mates or corals. They do walk over the zoas and shrooms but so do the cleaner shrimp.

 

yeah my crab sits with my shunk shrimps all the time never seen him aggersive except for feeding time even then its only to my hermits

 

Will they eat bryopsis?

 

They are like ninja's on hair algae...i had a little break out of hair algae..added a sally, and in 2 days..no more outbreak..lol

 

Will they ninja bryopsis?

 

I would think they probably would...cannot confirm though