Adult Lightfoot crab

[InvertEnjoyer]

I was wondering if any of you guys have experience with adult sally lightfoots as I only see the juvenile crabs in the hobby. I always see the adults live primarily on rock right outside of the coast so I wonder if you need to change their setup as they get larger.

 

[KrisReef]

Interesting. I have never seen a sally much larger than the palm of your hand. How big are the sallys you are speaking of? The smaller ones have not posed any problem that I am aware of, with exception that my buddy who doesn't like spiders gets creeped out from these crabs as well.


EDIT: so I went and looked around, I think there may be two different "Sally Lightfoot" crabs, but maybe not? The color I have seen was always a dull green/gray but the pics on line look like your photo, much nicer to look at. Also found that they are a potential invasive species with a history of this. So much to know, and not enough brain cells working atm to finish a

 

[WheatToast]

I was wondering if any of you guys have experience with adult sally lightfoots as I only see the juvenile crabs in the hobby. I always see the adults live primarily on rock right outside of the coast so I wonder if you need to change their setup as they get larger.

The Sally Lightfoot crab you are referring to is Grapsus grapsus (8 cm carapace), which does not enter the trade. The Sally Lightfoot crab that does enter the trade is a separate species, Percnon gibbesi (3 cm carapace):

 

[InvertEnjoyer]

The Sally Lightfoot crab you are referring to is Grapsus grapsus (8 cm carapace), which does not enter the trade. The Sally Lightfoot crab that does enter the trade is a separate species, Percnon gibbesi (3 cm carapace):

Huh. I always see both species where I’m at so I just assumed the smaller ones were the juveniles.