Shoot that's wired :-/
I have a clown goby,pink spotted goby, yellow watchman goby, fire fish goby, and two cleaner shrimps and it's like church in there ahhhh
Could it have been that it died then the goby grabbed a pease????
Cause I once had a clownfish die and I caught my yellow tang eating it, I say thats when fish or inverts do crazy crap like that ....