The best sand sifting goby is the bullet goby or sleeper banded goby.
My blenny constantly shifts through the sand. He is also a territorial jerk. How large is your tank and what else do you have for stock?
Starry blennies are algae eaters. Mine got the whole grumpy personality thing going too like another poster mentioned. It's one of my favorite fish.
So Benny's do not jump just gobies