I'm not sire if mine is sick or what but it seems to be puking all the pellets it ate. I did a w.c witch dropped the temp from 77.5° to 75.8° and he was sitting on my sponge filter twitching then when he moved I saw the pellets falling and he spit up a few more while swimming away.
I've been watching closely and he ee cause he's in his cave
Did you do the water change after you fed him? For some reason It is not unusual for them to regurgitate their food if a water change is done within a few days of feeding. Mine have done it on several occasions, now I make sure to do a w/c before feeding.