So female iridonian and male iridonian are different species?
i copied this from wikipedia
Iridonian Zabrak
This species is the same as the Zabrak; however, the term Iridonian merely indicates those individual Zabrak who are from the planet or are a direct descendant of Zabrak born on the harsh desert planet--which is their homeworld and where the species is known to have evolved.[citation needed] Jedi Eeth Koth, who sat on the Jedi Council, Darth Maul the Sith Lord, and Bao-Dur, whose Mass Shadow Generator won the Mandalorian Wars, are all confirmed Iridonian Zabrak. Agen Kolar (whom Eeth Koth tapped to become his successor on the Jedi Council) is the same subspecies as his predecessor, based on horn pattern, hence it would be likely that Agen Kolar is also an Iridonian Zabrak, though this is merely speculation. More a cultural and geographical distinction than a biological one, Iridonian Zabrak are suspected to have a somewhat different and intact culture than those Zabrak who have spread throughout the galaxy and have largely become assimilated into the human-dominated culture.[citation needed] Scant evidence exists supporting a biological or anatomical difference between Iridonian Zabrak and others of the species, though some indicators include the tendency towards olive skin and dark hair - however, Darth Maul's skin color and hairless scalp challenge any generalities that could be made.