Andorian

• Appearance: Mammalian; dark- to pale-blue skin, white hair, two antennae
  • Three major races
    • Thalassan: High, knobby antennae from back of the skull (ENT Novel: Live by the Code; Among the Clans)
    • Talish: Forward, tendril-like antennae from high on the forehead (ENT Novel: Live by the Code; Among the Clans)
    • Bish'ee: High, knobby antennae from high on the forehead (Among the Clans)
• Homeworld: Andor
  • Major offworld populations: Alrond, Threllvia IV, Weytahn
• Biological notes
  • Cobalt-based blood
  • Average body temperature higher than that of Benzites (TNG Novel: A Time to Harvest)
  • Four genders: Chan, Thaan, Zhen, Shen
    • Shen source of gametes, chan and thaan contribute genetic material, zhen carries to term in pouch on their back
    • Mated foursome known as a shelthreth, or bondgroup (ENT Novel: The Good That Men Do)
    • Successful reproduction from at least 22nd century onwards requires careful genetic compatibility due to unstated damage to the Andorian genome in this era
  • Antennae provide sensation of electromagnetic fields, including bioelectric fields of nearby life (ENT Novel: The Good That Men Do, Live by the Code; DS9 Novel: Avatar, Book One)
    • Mobile, responsive to emotional state (ENT Novel: The Good That Men Do, A Choice of Futures)
    • Able to pick up on emotional states of other Andorians as well (ENT Novel: Live by the Code)
    • Andorian technology often uses magnetic signals alongside visual akin to alert lights (ENT Novel: Live by the Code)
  • Andorians require about 4 hours of sleep a night (DS9 Novel: Avatar, Book One)
  • Andorian response to teptaline grants heightened focus and concentration, triggering a "fight-or-focus" reaction (DS9 Novel: Avatar, Book One, Avatar, Book One)
    • Teptaline an Andorian analogue to adrenaline (DS9 Novel: Avatar, Book One)
  • DS9 Relaunch works implied Andorians to be native to tropical climate; invalidated by later Enterprise appearances, maintained for completion's sake
    • 22 degrees Celsius, 18% humidity considered "cold and dry by Andorian standards" (DS9 Novel: Avatar, Book One)
• Aenar a telepathic subspecies formerly native to Andor's Northern Wastes (ENT: "The Aenar")
• Cultural notes
  • Andorian calendar
  • Andorian faith
  • Andorian language
  • Andorian food
  • Imperial andorian surnames start with gender prefix (ch', th', zh', sh') followed by clan names
    • Andorian formerly heavily clan based
  • Asking for another's opinion without providing one's own is considered a sign of respect (DS9 Novel: Avatar, Book One)
  • Generally aggressive culture (DS9 Novel: Avatar, Book Two)
    • Quick to anger, long memory for both offenses and favors (ENT)
    • Incredibly structured, serious in compensation (DS9 Novel: Avatar, Book Two)
      • Humor, public expressions of pleasure rare (DS9 Novel: Avatar, Book Two)
        • Smiling a learned behavior when interacting with cultures which use the act (DS9 Novel: Avatar, Book Two)
    • Ushaan
      • Ritual combat to provide for relief of violent instincts following extreme wrongs (ENT: "United")
      • Fought with handheld ice-cutters known as ushaan-tors (ENT: "United")
        • Common tool in Andorian civilization, easily available (ENT: "United")
  • Blue a signifier of danger in Andorian culture (ENT Novel: Live by the Code)
• Musical instruments
  • Flabbjellah (ENT Novel: Live by the Code)
    • Also functions as a throwing club (ENT Novel: Live by the Code)
  • Zharen'tara (ENT Novel: The Good That Men Do)
    • Stringed instrument (ENT Novel: The Good That Men Do)