Grrrr

[o.c.d.]

It may have been going for food that was in the polyps. Indicating starvation. Have you tried to target feed the crab? Big misconception that animals like hermits don't need to be fed. Mostly wrong, if they are exibiting troublesome behaviour" ie fighting when plenty of realestate is available , attacking coral, snails ect... I would try too feed it... then banish at last resort