Assessors/Comet?

[psilentchild]

I was looking in one of my salt water books and saw two assessors fish one yellow and one blue assessor.Can someone who has one or know someone who has one tell me about both of these fish.

 

[Jovreefer]

Great little fish, they will usually hang out under a ledge. Never had a problem feeding or with agression with other fish.

They are really expensive little fish though. Last I checked $60-90 depending on the LFS.