Well, I've been expecting a lion and some kind of fish as the legendaries due to this:
http://www.azothalchemy.org/azoth_ritual.htm
"The alchemist also stands balanced between the masculine and feminine powers in the background. He is really the offspring of the marriage between Sol, the archetypal Sun King seated on a lion on a hill to his right, and Luna, the archetypal Moon Queen seated on a great fish to his left. “Its father is the Sun,” says the Emerald Tablet, “its mother the Moon.”"
Since the lion fits the -leo already, I'm suspecting the other name might turn out to have some relation to something aquatic rather than "wing"?
No idea though. Squalus is a stretch...couldn't get anything closer with simple searching xD