When Water Dragons mature, they lose the ability to survive on land, entering the water permanently. They are adept swimmers and eat whatever fish are in the lake they live in. They tend to inhabit the same lake for their entire lives, although a few live in the ocean and swim all over the world.

Dragons are highly-intelligent reptilian creatures that—from a human perspective, at least—appear to live forever. Many different varieties of dragon exist, each with their own unique qualities, habitats, and behavior. Adolescence in dragons is usually marked by the growth of a hatchling’s wings, although not all breeds of dragons grow wings and some breeds have other traits that indicate the beginning of maturation. In Galsreim, dragons and humans coexist peacefully.

Aquadraco doesn't come up with riddles, he prefers to just solve them.  Therefore, he seems to be the perfect lifemate for K10, who creates puzzles.  Draco is rather vain, however, and will preen for hours in front of a looking-glass or reflective pool of water.  He puts fish scales onto his own to make them shiny, or, to quote, "give them that special sparkle".  No one pays him any mind if he begins to brag about how good he looks.  They simply put wool into their ears and carry on with whatever they were doing.