So I have a 45 gallon tank with a clownfish, royal gramma, shrimp/goby pair and lots of lps/softie corals. I have always wanted to get a cleaner shrimp as I think they look really cool. Question is, do they really serve any purpose besides aesthetic? I know they eat debris and uneaten food, but I mostly spot feed and already have a pretty good cuc currently. I don't have large fish for it to eat things off of and I would like to avoid adding in another mouth to be fed so would it serve any purpose in my tank besides looking cool?