No its not normal, whilst they do mainly bottom dwell, they are usually fairly active, sifting thru the sand/gravel.
From the looks of your pictures on your new tank set up in tropical discussion, I would say you have either Satanoperca Jurupair or Satanoperca Leucostica, definately not Satanoperca Daemons btw.
just posted pic links above!Ok from that its definately not S.Daemon, look at my signature, ok its adult, but that is a S.Daemon. However, it does look pale, isnt breathing normally and doesnt look at all well.
Any chance of full side on shots of the others for an ID.