Central Coast Ski:xs Language Family: Tsimshianic Language known as: Klemtu, Southern Tsimshian Ski:xs is spoken at Klemtu. For more resources see the Ski:xs Resource Page State of the Language First Nation Population Fluent Speakers Understand or Speak Somewhat Learning Speakers Kitasoo/Xaixais Nation 5081 unknown unknown unknown Total 508 unknown unknown unknown Footnotes / References 1. Indian and Northern Affairs Canada (2008). First Nation Registered Population.