I have seen salousi, but only once. My guess is what you were seeing were not a "pure" a line. Of course I am only guessing, it may have just been a different collection point or just stressed for a variety of reasons.
If you aren't thrilled with the look of the fish in store then I wouldn't get them, but that is just me.
If you aren't thrilled with the look of the fish in store then I wouldn't get them, but that is just me.