Rybet females were typically larger than the males, with an average height between 1.5 and 1.9 meters for the females and 1.2 and 1.5 meters for the males. They were an opportunistic species, well-suited for a nomadic lifestyle in space. Typically, they had a rather questionable grasp of morals and ethics, if any.
The Rybet claimed to have evolved on Varl, and that the planet's destruction was the result of a war they waged with the Hutts. They also claimed that they would eventually defeat the Hutts and reclaim their home. The Hutts found this mildly amusing, while most scientists disputed the claim.
Xenobiologists estimated that fewer than a billion Rybet existed in the galaxy, possibly due to the pathological hatred male Rybet had for female Rybet and vice versa. The only thing that allowed them to overcome this was their overwhelming urge to mate and reproduce, which happened only once every ten years after reaching adulthood. Moruth Doole, the Rybet administrator of Kessel after the Battle of Endor, kept a harem of Rybet females to mate exclusively with, but this appears to have been not only an aberration, but a matter of opportunism rather than mating urge (since he used his young as cheap labor before killing them while they were still young).
The only time where a male and female Rybet lived together for any length of time were in the first years of raising their young. Females typically raised a clutch of three to eight eggs. For the first year or two, the parents would stay together, slaving their starships together and taking their parts in raising the young. This arrangement didn't last long, however—after the first one or two years, the male either left or else would find himself dead or severely maimed.
This arrangement may sound disadvantageous to the young, but Rybet young matured quickly, ready to make their own way by age five. The mother would unceremoniously toss them off the ship at this time, leaving them to figure things out on their own, though in the case of females that killed their male mate, the mother would typically sell the dead male's ship and give the young the resulting credits as start-up money.
- Escape from Dagu (canceled)
- Rookies: Rendezvous
- Dark Forces: Soldier for the Empire
- Star Wars Missions 19: Bounty on Bonadan
- The Bounty Hunter of Ord Mantell (First appearance)
- Beyond the Rim
- Deadly Reunion
- Traitor's Gambit
- Dark Forces: Rebel Agent
- X-Wing: Wedge's Gamble
- The Last Command (Mentioned only)
- Jedi Search
- Champions of the Force
- Young Jedi Knights: Return to Ord Mantell (Mentioned only)
- The New Jedi Order: Agents of Chaos II: Jedi Eclipse
- The Essential Guide to Characters
- "Predators for Hire: A Guide to Star Wars Bounty Hunters"—Star Wars Galaxy Magazine 6
- The Jedi Academy Sourcebook
- Cynabar's Fantastic Technology: Droids
- "Feature Planet: Kessel"—Star Wars Kids 12
- Alien Anthology
- Ultimate Alien Anthology
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- The Complete Star Wars Encyclopedia