Type/Species: Eastern Dragon
Origin: Japanese/Chinese Mythology and Zodiac
About Blue Dragon
Blue Dragons are said to be the protectors of the Chinese/Japanese Zodiacs. Year 2000 was the Year of the Dragon. All the other years (1988, 1976 - keep subtracting twelve...you get the idea) of the dragon are also the celebration of this dragon. Those born in the Year of the Dragon are said to be lucky, outgoing, natural born leaders, short-tempered, stubborn, honest, loving, and benevolent. 
The Blue Dragon is a symbol of a leader. Perhaps the short-temper and stubbornness of the dragon leaves them in-balance with other the other Zodiacs.
Unknown, perhaps Ying-Lung Chinese Dragon.
For more information on footnotes and references, please see the bibliography.