JennM;762058 wrote: I heard my name called
Could the Clarks be picking on it? Clarks are some of the more aggressive clowns, and damsels are in the same family as clowns. Could be a turf war.
Is the wound clean? Or is the tail, or remainder of tail, ragged?
Picture would be helpful.
I doubt it's the emerald unless the damsel tends to hunker down in a hole at night - usually they don't, thus the crab wouldn't have a way to pick on the fish.
How is the damsel's behavior? Does it eat well?
I've seen fish do just fine despite losing fins/tail. If the damage isn't too severe, it may grow back, but if it was picked/chewed right off, it may not. As long as the wound site heals without infection, the fish will do fine. If there is an infection though, that is another story.
Jenn