I just checked on the Sally lightfoot and it is picking and eating away; it's an eating machine relative to the emerald crab! The Emerald is a thoughtful, slower eater. This thing just chows down. I am excited about this now.
Interesting thing: Sally Lightfoot is a common name usually applied to Grapsus grapsus, from Baja and down to the Galapagos. That's not what this is. Fish stores sell this crab as a Sally Lightfoot and it's in the genus Percnon, often displayed as Percnon gibbesi, which is native to the Caribbean. (Note: the one I bought was labeled as Grapsus grapsus, but it isn't that for sure; I will take a picture sometime). I think the one I got is from the western Pacific and may be Percnon planissimum,
http://www.poppe-images.com/images/s...mily=GRAPSIDAE because it has the blue dots on the carapace. I just viewed it with the Nightsea light and glasses and only the tips of the claws and feet fluoresce (yellow). Neat.