Shrimp least likely to be little ******** at everything sessile?

[Tired]

I know cleaners tend to be little pests at feeding time, stealing food from corals and such. Sexy shrimp will pick at zoas if not fed well enough. "Gonna bother that" seems to be pretty much a ubiquitous shrimp trait, but are there any that are less likely to do so? Maybe the small anemone shrimps, like venus? 

 

What are the Donald Duck shrimps like?