Arvarians have a very special relationship with nature. They often leave all the nature untouched, leaving the planet teeming with plants. This also causes them to live only in hollowed out or already dead trees - if they live in trees at all. A lot of Arvarians live in the vast ocean they have, only choosing to settle down to nest to court and raise their young. Many people attribute this to the scarce amounts of land they have - although, of course, the Arvarians would never admit that ;)
The Arvarians are also very trusting, affectionate and generous people, and they express it during gifts. They often give flowers and plants - and sometimes even a bag of what looks like fairy dust - to establish relationships, whether it be intergalactic or courtships.