I'm sorry Alowry! I just realized that you were asking about cleaner wrasse. For some reason of me not reading right, I thought you were asking about a six line or Christmas wrasse.
I did however have a cleaner, they are good little guys. Mine was a pig and I never had a hard time giving him anything. He ate everything with no problems across the board. I didn't like that he was a bit skittish and I decided to go with cleaner shrimp instead so I gave him away, but they are pretty hardy little guys.
Sorry for the misinfo!