The people are led by the Monarch of the Hydran Kingdom, who has many children. However, clear lines of succession are somewhat difficult as the Hydran people are not monogamous. The Hydran Royal Family alone consists of 30,000 beings, with 1,200 of them being Princes or Princesses.
Despite being a monarchy and having a noble class, the Hydran Kingdom is actually run by the civil service. It is the bureaucracy which is in charge of the day-to-day affairs of the state. Occasionally the nobility get involved in domestic politics.
It's economy is run by numerous trade guilds. Of which a significant number possess considerable economic power. It is these trade guilds which often determined who ascended the throne. Hydrans are a deeply religious race, whose religion has similarities to animism. It's a religion consisting of the worship of a pantheon of minor gods, as well as space living beasts. Every household, starship, and military unit or organization has its own god or set of gods.
The military was known for its fighter corps. Hydran warships usually carried more fighters than their counterparts in the Federation or Klingon Empire. Squadrons of fighters complemented their warships firepower. Hydran ships were first armed with fusion beams and gatling phasers, and later the major starships were equipped with long range hellbore cannon.
The Hydran Kingdom has often been at war with the Lyran Empire and the Klingon Empire. Due to their hostile relationship with the Lyrans, they have an alliance with the Mirak Star League. The Hydran Kingdom was once conquered by a united Klingon and Lyran invasion force that ruled over them for many years from orbital stations. (As the Hydrans are methane breathers, the invaders could not comfortably survive on the surface.) During this time, the Hydran Lost Colonies served as the only 'free' group of Hydrans. Eventually, the Kingdom was freed thanks to the aid of the Federation. (ST video games: Starfleet Command, Star Fleet Battles)