Cleaner shrimp being attacked?

[hookitbig]

My cleaner shrimp keeps having his tentacles or "whiskers" I am guessing bit off by something in my tank?
I have a yellow tang, a long nosed hawkfish, barbershop goby, two clown gobies, a kole tang, and two peppermint shrimp.
I have never seen any of the fish attack the cleaner shrimp. And the only aggressive fish is the yellow tang. When I have my hand in the tank he is constantly backing up with his scalpal trying to cut my hand.
Any guesses? Water conditions are exact and I cant figure it out.
Thanks

 

[sepulatian]

The hawk could be doing it. Shrimp is part of their diet.

 

[hookitbig]

I came out of my room and was standing watching the tank without the fish realizing I was there. It was the yellow tang. The shrimp was hiding under a rock and his tentacles were out from under the ledge. The tang went down and grabbed one and ripped it off.
I got the tang out of the tank and now the shrimp hangs out right in the middle of the tank in plain view.

 

[aquaknight]

My yellow tang does the same thing. I don't think it's actually trying to eat the shrimp, just sees the antenna as a piece of alage or something?

Mine has dragged the shrimp across the tank not realizing there's something attached lol. I wouldn't worry it too much, they grow back rather quick.