Best parasite cleaner for your tank

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In a lot of reef tanks a lot of people will have a dedicated fish or invertebrate for cleaning pests off of other fish such as cleaner shrimp or cleaner wrasse. Which does a better job at cleaning in your opinion. I see cleaner shrimp do more active work on fish and not be as picky, where as cleaner wrasse tend to stick to larger fish species.

 

[exnisstech]

My pair of cleaner shrimp used to ride fish around cleaning them. They never cleaned again after I moved to larger tank. They were great at stealing food out of lps but became useless for anything else. I have a Blue streak cleaner wrasse in my large tank that works on the tangs but not a lot. I'm wondering if there's really enough parasites on the fish to really need a cleaner.
In one tank I have a electric blue damsel that will posture and my sixline cleans the damsel which is interesting to watch.