Need Opinion on a Fish

[cam78]

I'm looking for a fish that cleans the sand. I would like opinions which fish, that cleans substrate, is the best looking. If you can attach a picture to your selection it would be appreciated. Also it has to be reef safe. Thank you!
Oh yeah, the best looking one I found I think is the Diamond Goby. Any thoughts?

 

[fish3]

diamonds are good fish my clown killed it though

 

[seasalt101]

i have the golden headed sleeper he does a good job in 2/3 of the tank the lawnmower blennie staked claim on the other 1/3 of the tank never have seen them fight or nothing like that i just think it is a territory thing overall i think a very good fish though tobin