Sand vs no sand?

[jordsyke]

I have very little sand in my tank in the front, Lots of flow so it blows around a lot . But the back part of my tank is bare bottom and I like that I do not have to get into those hard to reach spots to maintain it. I have a large rainbow wrasse that dug himself in at night in his previous tank, but because of my small sandbed just hides in a rock at night now, happy as can be.

[Coral Hoarder]

Was thinking about Cori's wrass one of my favorite fish and I know not all sleep in sand just the pretty ones Do lol