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Intelligent Lifeform Index

Image of an Ariolian
Four Letter Code ARIO
Federation Status Member
Planet of Origin Fillandia
Encountered Star Trek IV
Current Tech Level M
List of Named Ariolos

Full ILI GalleryPermitted Species Gallery


  • Proper Name: Ariolo
  • Pronunciation: Ari'Olo

Home System

  • Quadrant: Beta
  • Location: Pov'iris Sector (coordinates B24-0002-1303)
  • Proper Name: Filland
  • Pronunciation: Fill'and
  • Star: It orbits a class M (Red) star
  • Distance from Star: it's orbit is approximately 382 million km
  • Companions: There are 6 other planets with Filland being the 4th

Home World

  • Proper Name: Fillandia
  • Pronunciation: Fill'and'ia
  • Diameter: 10,677 km (6,673 miles)
  • Gravity: 0.93 standard gravity with a density of 6.1
  • Axial Tilt: 9%, minor seasonal effects (less than Earth)
  • Orbital Period: 402 days
  • Rotational Period: 26.5 hours
  • Classification: M
    • Surface Water: 47%
    • Atmosphere: 0.98 is a standard pressure with 73% nitrogen, 23% oxygen, 4% other gases
    • Climate: Temperate to cool
    • Population: Just over 1 billion


In 2285, the Ariolo were represented by two ambassadors to the Federation Council.


They have a peculiar form of government. Every member of their government is selected by testing from the general population when they reach the age of maturity. This testing determines the natural skills of the individual and the best occupation for them. It also determines the position they will hold within the government.


Ariolo have a tough, almost leathery skin that is usually a dark grey or brown in color. They have angular heads that slope upwards from a low forehead to the rear of the cranium. The jaw is angled down so that the mouth, which reverses the angular pattern to slope upward away from the line of the jaw and forehead, protrudes slightly away from the face.

From the waist down they have centaur-like torsos. Supporting their bodies are 4 legs that end in a foot with even thicker leather like skin. This foot more closely resembles a terran camels foot than anything else.

They prefer to wear dark colored robes. As decoration they wear metallic badges or symbols that reflect their position and authority within their society. They also tend to wear a hooded cloak over it all with the hood covering the back half of their head.


They have a peculiar physiology with a number of internal back up systems. In effect two of every major organ and subsystems that regulate any excess equally between the two organs. As a result they tend to be very healthy. They also have an extremely aggressive immune system.


They don't tend to get excited. Seldom if ever acting in anything but a calm manner regardless of the situation.


They have no known religious beliefs.


They have no known myths.


They have a very rigid society. Everyone works for the betterment of their people and the planet as a whole. They are assigned jobs based on testing that determines their natural skills and abilities.


The only form of art that they use can be found in their construction. All buildings, structures, facilities to furniture have smooth flowing lines. They also are covered with lines that curve and sweep about to form pleasing geometric designs. Corners are totally unknown in their construction.


The most important celebration in their lives is the Age of Maturity. At this time every citizen undergoes an extremely detailed and complex set of testing. This testing is not only mental but physical and genetic. It takes 5 days and 16 hours a day on average to complete this testing. Once it is over the youth is assigned to the best job that their natural abilities makes them suited to perform. During this testing the perfect mate is also selected.


While they are fairly advanced they are slightly behind most of the other member worlds of the Federation. This does not seem to concern them and they tend to take an extremely long time examining and experimenting with new technology before they start using it.


They have an excellent trade system with many of the member worlds of the Federation. They are one of the main exporters of trillium.


They have no military force of their own relying on the Federation to keep their world safe. They do have a police force but it is mainly in place to control and watch over visitors to their world.

Federation Intelligence Files

For more data see Federation Intelligence Files ENT-4444-0124

Content from this article may have
come partially, or entirely from
Memory Alpha

This profile was revised by the Species Development Committee.
REV 239601.12
Please add any new information discovered during the course of a mission or shore leave.