Filefish ate my cleaner shrimps

Hello reefers. I had 2 cleaner shrimps and the latest addition to my tank decided to eat them. He cleaned out the aptasia and then cleaned them out. What else can I use as clean up crew as I obviously have to stay away from any form of shrimp now. Not wanting to add anymore fish as I am happy with the amount I have. Should I do crabs or snails or what do you guys suggest that can not get ate by this filefish