This is my first post to the forum, I'm new to the reefer community.
I'm posting because I've noticed my own peppermint shrimp (trained to eat aiptasia) has been nibbling at my open brain coral,
Now before anyone leaps to conclusions about him being non-coral safe and having developed a "coral craving" I'd like to suggest something else -- Grooming.
This particular brain coral seemed to be suffering from a slow recession, maybe from protozoa (or my shrimps nibbling) and I've noticed that he only picks at the white edges of the brain coral, as if he were tryin to groom the sick areas off. He doesn't mess with the primary lobe what so ever, just the sickly looking edge bit. He cleans it up to the point of healthy tissue. He lives right beneath the one he seems to be grooming, so I wonder if he's conciously doing housekeeping.
..... I fed him today b/c I was afraid he was just hungry and actually doing the damage I thought was protazoa. I should have waited longer to see how things played out with the grooming/eating. I don't plan on any more direct feedings.