Personally I like cleaner shrimps (Lysmata Amboinensis). I think that they are a fantastic addition to a reef tank. I have two in my aquarium and really enjoy watching them.
I like the way thay they hang upside down in a cave, the way in which they will take food out of your fingers and especially when they climb up your arm looking for food when you have you arm in the aquarium doing this and that.
There is one thing about them which I don’t like though and that is ‘they walk on the corals’
I admit it is not a big thing and it certainly is not a bad thing but they do appear to like to walk over the corals. The corals then in turn retract the polyps and the cleaner shrimp carries on wandering around the aquarium in search of scraps to consume.
This one little thing aside though I do believe that they are a fantastic addition to a reef tank. They help to a certain degree with keeping it clean (they should not replace your clean up crew but make a good addition to it), they add some movement as well as colour and they also as said are great to watch.
There are many other types of shrimps you can have in your reef tank – banded coral, blood, peppermint to name just a few but in my opinion the cleaner shrimp does offer the best when it comes to aquarist entertainment.
One of the reasons we keep an aquarium is for the joy it gives us – is it not?