Athena, one of my G. chiraga got me once, when I was first putting her into her tank. It hurt for a second, then went sort of numb, The next day, I was opening a cooler at work, and it felt like my finger had snapped. It was a pretty painful bone-bruise for a few days.
Gonodactylus has us all beat, as I am sure that the good Dr. Roy has been caught many times over the years.
-Ron