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The Ktarians were a humanoid civilization native to the world of Ktaris, also sometimes known as Ktaria.


The Ktarians had diplomatic relations with the Federation and its predecessor state, the Coalition of Planets since at least 2155, when they sent delegates to the first coalition talks on Earth in that year. (ENT episodes: , "Demons")

Alternate timelines

In the Kelvin timeline, Ktarians were known to the Federation by the 2250s decade. In the year 2255, Doctor Leonard McCoy had a nightmare where he had to treat streams of patients, including Ktarians, all by himself. (TOS - Starfleet Academy novel: The Assassination Game)


Full blooded Ktarians are humanoid in form with foreheads made up of two large bony hemispheres bisected by bone-like ridges ending at the top of their noses. Female Ktarians have scales on their mammary glands designed to protect them from the incisors that erupt from their young after three to four weeks. Full-blooded Ktarians have horizontal goat-like pupils and irises in at least the color yellow. (TNG episode: "The Game", VOY episodes: "Deadlock", "Mortal Coil")

Ktarian-Human hybrids lack both the horizontal pupils and the bony foreheads in favor of a range of small exo-cranial horns running down the middle of their foreheads. A rare complication in the gestation of Ktarian-Human hybrids is a sudden shifting of the fetus resulting in the lodging of the exo-cranial horns in the uterine wall, which can result in internal bleeding if not corrected. Fetal transport is the correct manner of delivery to avoid nerve damage in the child or mother following this complication. A small complication called hemocythemia, or hemocythemic imbalance, can result from fetal transport in which the osmotic pressure of the fetus's cell walls become unstable, but can be corrected with osmotic pressure therapy. (VOY episode: "Deadlock")

Ktarians grow at a much faster rate then most humanoids; Naomi Wildman, a Ktarian-Human hybrid, entered Starfleet Academy at age nine or ten instead of the Human age of eighteen. (VOY novel: Full Circle)


Ktarian burial rituals are held on Ktaria VII, in which Ktarians lay thousands of stones around the tomb of the deceased, each stone representing a special prayer. The removal or displacement of one of these stones is considered a desecration of the burial site. (VOY episode: "Emanations")

The Ktarian glaciers were a popular ski destination. (VOY episode: "Macrocosm")

Ktarian culinary dishes popular in the Federation included:

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