Shrimp in coral only tank?

I have a small tank in my room that i have had running for awhile with live rock.

It is a barebottom tank and nice lighting system.



My daughter wants to add a shrimp to it cause we recently lost a cleaner shrimp from my 60 gallon tank. I dont know which fish got him so i was wondering if there is a shrimp that would benefit my coral only tank??



Thanks my daughter will appreciate it.