Hallo Herve,
can’t say. I got them the ninth of September via my fish org from Aquarium Dietzenbach sent to my aquaristic shop “Unter Wasser Freiburg”. I got them in the original fish bag from the transport.
I was also already thinking of why my male don’t has a red band on its fins like Helenes one.
Perhaps the colors are different because of photo technic and I don’t use flash light. About the shape I can’t tell, just they are slimmer than my linkei.