2 different leopard wrasses, african leopard (bottom) and potters leopard. No, they would not work in a 10G, they need at least a 50G and good size sand bed because they bury themselves in the sand to sleep at night.
I would not call the Yasha a beginner fish by any means but that is more the fishes fault than the persons because it is up to the fish's health that dictates how well it does in a tank initially. They are just more fragile fish than other gobies and the stress of collection and shipping takes more toll on them than other fish. If you came across a local reefer selling a yasha he/she had for a year, it would probably be a very easy beginner fish at that point, but very unlikely you would come across that scenerio (I know I have never seen a local reefer selling a yasha).