Fish missing tail :(

[Soto413]

So today in looking at all my fish and my Dwarf Lionfish isn't swimming around he is just sitting on rocks (not like him) I finally noticed that half of his tail is missing. We haven't bought any new fish except a Daum's Reef lobster... I have did research on them and it says they are very peaceful does any one have any experience with them? Or does anyone know if they would attack my fish? I really don't want him attacking my fish if he is the cause.

 

[woody390]

Reef lobsters to my knowledge will eat fish and inverts given half a chance so could well be the cause to be honest