Pelian
The Pelians were a humanoid species from the Alpha Quadrant. They were native to the Federation planet Peliar Zel II. Their appearance was characterized by a midline nasal outgrowth. 

The moons of Peliar Zel were colonized during the 19th century. Throughout the next five hundred years the governments of Alpha moon and Beta moon were at odds with one another. 

In 2152, a member of this species was found by  while it was docked at the automated repair station. It was discovered that the Pelian, along with the bodies of many other species, was being used to increase the processing capabilities of the station. ()

By 2337, Trill Ambassador Odan was called in to mediate a major dispute between Alpha and Beta moon. Over the next thirty years, relations between the Alphans and s would again deteriorate to the point of war. The major contributing factor to the situation began when the Alpha moon developed an energy source harnessing power from the planet's magnetic field causing substantial environmental damage to Beta moon. 

In 2367, Ambassador Odan again negotiated a peace accord between the Alpha and Beta moons. ()

In 2368, there was at least one Starfleet cadet of Peliar Zel origin in the observing crowd at the inquest held into the death of Cadet Joshua Albert. ()

Beginning with the year 2369, when the Cardassians had left Bajor and given control over Deep Space 9 to the Bajorans, some Pelians called the busy station their home. A male and a female Pelian were often seen on the Promenade or in Quark's. 

In 2370, the couple from Peliar Zel II was integral in kidnapping William Patrick Samuels, a member of the Maquis, for the Cardassians away from Deep Space 9. (). 

At the end of 2371, a female Pelian was sharing a drink with Morn in Quark's. ()

By 2372, at least some Pelians had made it to Earth, as one was a customer at Sisko's Creole Kitchen. () Another was seen in San Francisco close to Harry Kim's apartment that year. ()

The Peliar Zel couple was also present during the Klingon wedding of Jadzia Dax and Worf in 2374, () and was on the Promenade when Odo finally admitted his love to Kira Nerys later that year. ()

People 
Named
 Lathal Bine ()
 Leka Trion 
 Kalin Trose (Alphan)

Unnamed
 Unnamed Pelians

Appendices

Appearances

Background information 
The name of this species was not mentioned in dialogue, but comes from an internal reference document written around TNG Season 5, later released by Roddenberry Entertainment.  In it, the Pelians were described as: "tall, humanoid in appearance but with a larger cranium and forward lobe in the skull. rigid head." Pelian was later used by StarTrek.com. 

A script note from "The Host", at one point, describes the species as "Peliar aliens". 

Journalist Benjamin Svetkey, who made a cameo appearance as a Pelian in "Emissary" described his character as "a 5'9" asparagus spear". They have been identified on call sheets as "Asparagus" for the couple in "The Maquis, Part I", and "Asparagus Head" in "Image in the Sand" and "Dead Stop". For "Non Sequitur", the call sheet simply described the species as "Masked Alien" or "Alien Pedestrian".

Apocrypha 
In the TNG novel The Buried Age and the   Fear Itself, the species was referred to as "Peliars."

External link 
 

ja:ペリア・ゼル
de:~/Spezies/TNG/4x23/1
Species
Memory Alpha articles named from supplementary resources