Thought I’d mention the mechanics behind interbreeding of the different species on Aeris.
As far as I know only the Aeryx, Raskahn, and Sartuk can interbreed with each other, but only to a point! The amount of aetherblood in each parent is paramount to the outcome of the offspring or lack there of. This does not include the Lesser Aeryx, like Sardiryx.*
If both inter-species parents lack aetherblood, or sport an extremely low content, they will not produce any offspring at all. Offspring can be birthed by parents whom have an aetherblood content as low as ~40% each. The percentage is loosely based on the blood’s color (I’ll have to make a chart for it later). Aether alchemists have the ability to measure the content in each parent via a scrying technique — a helpful ability for hopeful parents as well as a look into what their future offspring may look like!
Aetherblood dominancy - If one parent has a higher content of aetherblood compared to the other, the offspring has a higher chance of resembling that parent. Due to aether’s chaotic nature, it is not a guarantee however. You can still result in a Sartuk x Raskahn infant, where the Raskahn has the higher content, to appear more or purely Sartian. Because of the presence of normal science-based blood in the equation, this prevents the aetherblood from producing purely chaotic results as seen in purebred Aeryx offspring (where infants do not share traits with the parents, their physical form and attributes are governed by environment and reigning elemental deity(s), etc.).
The Half-Aeryx - These offspring, for the most part, are highly celebrated in Sartian culture. For any Aeryx deciding to mate with another race is a momentous occasion (the spreading of higher aetherblood content into the population and the inherent elemental abilities that result from that amongst other things, evolution of aesthetic appearances, etc.). Half-Aeryx appear more draconic than their Sartian or Raskaelian peers and have a minimum aetherblood content of 75%, the content will never reach 100% as seen in a purebred Aeryx, however.
Half-Aeryx are rare but most prevalent in Sartian society. It’s extremely rare in Raskahn society due to heritage tension (Raskahn are descendents of the Rog, a species resembling gryphons and are still a hostile/rival race to the Aeryx despite nearing extinction), but it can happen! The rarity behind the Half-Aeryx is due to the ritual required for consummation - a daunting process where the fusing of each parent’s aetherial essence is required as well as temporary transmogrification on the Aeryx’s behalf to suit that of their mate. Several days may pass while the Aeryx grows competent to use their temporary new body, slowing the consummation ritual.
*Breeding with Lesser Aeryx is seen as strictly taboo. Lesser Aeryx are seen as a lesser race despite their level of sentience and sapience; they are still seen as a somewhat feral race. Having sexual intercourse with one is seen as bestiality and is punishable by death in Sartian culture.