On Saturday I picked up a Yellow Wrasse to take care of some unwanted pests like bristle worms, pyramid snails, etc. It was swimming around the tank and ate some mysis right off the bat. Then about 1hr after I put it in the tank it burried itself in the sand because my Sailfin Tang was harrassing it. Well, I didn't see it at all yesterday which made me a bit nervous. I checked all around the tank and it didn't jump and it's not in the overflow or the refugium. I looked under the tank and it was still burried in the sand. Is it normal for them to stay burried for that long of a time if they're threatened or scared?
Here's a quick pic I took right after I put it in the tank.
Here's a quick pic I took right after I put it in the tank.


