They are a humanoid race dedicated to helping others and, as a result, their hospitality is legendary. They are especially interested in stories, regarding them as an essential part of their culture. In fact they are mostly interested in the new and different, quickly growing bored with any particular person or activity.
The Sikarians are a technologically advanced race but the most unusual piece of technology on Sikaris is the spatial trajector, which can instantaneously transport a person up to 40,000 light years. The limit of its range is the planet Alastria.
In 2371 the USS Voyager attempted to purchase this technology but was turned down by the Sikarian Government. A secret exchange was made anyway but the trajector turned out to be incompatible with Federation technology due to it emitting anti-neutrinos. (VOY: "Prime Factors")