oh thats odd.... Well if you scroll through those center pictures, you should be able to find one that looks close.. They have tons of pictures so just quick scroll and see if you see any gobies that look similar...
The fish thats more commonly called Skipper ( rockskipper ) is a Lawnmower Blenny or as said a dragonet.....sifters are mainly in the genus Valenciennea, Amblygobius. You can google those and see if you find one simular...
The Decorator Sand Goby was one of the pictures I was trying to post earlier that didnt work. Also look at the Ornate Shrimpgoby, as that was one of the others...