Hunger Strike?

The Rabbit fish has gone on a hunger strike...he went from eating everything and anything from a fork, spoon, or from the algae clip to nothing, zilch, naada. Don't know if it is because the CBB died or? They were good buddies and swam around a lot together...now what??? Have tried to soak Nori in garlic, selcon, neither/both, every type of frozen and flake foods......I guess only time will tell. Pysire on Canreef bought one at the same time I did....his is still doing well. Let's hope