Cleaner shrimp missing legs

[Transparent24]

Hi guys, I may have a problem. I have a cleaner shrimp who lost 3 legs and all of his antennas have been cut short. I am not sure if my fish is nipping at it or if it’s being caused by my circulation pump...or something else? I have a fluval 13.5 evo and my circulation pump is somewhat close to one of my rocks. I am thinking the shrimp is getting too close or jumping on it and possibly getting some limbs & antennas caught. Any ideas???

2 ocellaris clownfish
1 diadem dottyback (this guy isn’t very nice)
Some turbo and nassarius snails.

I have had the dottyback for a few months and he’s nipped but never took limbs. Antennas have been cut short, maybe one at a time but not all at the same time like currently.

1 clownfish has gotten really aggressive towards the other one lately.

 

[Coastie Reefer]

It’s not the clown... very well could be the dotty. He will grow everything back after his next moly. They’re super vulnerable after a moly though so hopefully whatever is attacking it doesn’t get him while he’s waiting on his new exo to harden.

 

[W1ngz]

Quote from liveaquaria's page on that dottyback:
"It will eat ornamental shrimp"