The Risians (occasionally Risans) were a humanoid race from the planet Risa. The Risan language was not spoken by many non-Risians, as most visitors did not bother to learn it. Risians were extremely close to Humans in appearance, but did have a small mark on their forehead, a decorative emblem between the eyes, as well as a different internal biology, which rendered Human treatment at Risian hospitals difficult during the 2150s.
The Risians observed the "Festival of the Moon", or Lohlunat, which was a very popular celebration among the Risian people. They celebrated it at the Suraya Bay. (ENT: "Two Days and Two Nights") Also, Risians often initiated or responded to the desire for sexual relations through the use of a small statuette called a horga'hn, which was the Risian symbol of sexuality or fertility and became a symbol of their culture. They considered a mysterious sexual practice called jamaharon extremely pleasant. If a Risian sought to participate in that sexual rite, they indicated that they wanted it by displaying a horga'hn.