I just got a Motoro last Sat. and I kept the lights off for a few days b/c he kept burying himself but it will be a week tomorrow and he still hides a lot and barley moves unless it is completely dark. The last stingray I had was an Atlantic and he never quit moving. Is this normal that he doesn't move a lot? Also I just tried feeding black worms today and he acted like he didn't even see them. Is there a certain way you are supposed to feed rays black worms? Thank you for any advise!