The only way, as suggested, is to use scientific names (even in
your own language, in Germany every rainbowfishkeeper mean-
while knows what a "Boesemani" or a "Lacustris" is without
knowing it's a Melanotaenia) and finding place. In M. trifasciata
many of the fish here are kept exclusively under their origin places,
like Goyder Rainbow.
Harro