thanks minh.
well, i had a boxfish that liked to hang out close to the gig because a cleaner shrimp has made a cleaning station very near its foot. the boxfish seemed fine a couple of nights ago and then was nowhere to be found the next morning. i suspected that she got too close to the gig, and last night my suspicions were confirmed as the gig started to regurgitate what was left of the skeleton. it took all night and part of this morning, but it finally released the undigested remains and looks normal now. hopefully it wont have any effect on the gig other than a probable growth spurt.