I feel sorry you did not get the fish you expected (H. gracilis). However, what you got are beautiful fish!
I had not read this [now old] thread prior to posting a new one earlier today (see recent posts).
I do not think these are H. gracilis that have lost their red tinge. In my experience, H. gracilis stays small (3-5 inches maximum). The fish I posted about this morning (picture attached here are over 6 inches].
D.oes anybody have H. gracilis as large as 6 inches? I would be surprized if that is the case....