Blupee

are Creatures in.

Characteristics
Blupees resemble glowing, blue Rabbits that flee when noticing Link, eventually disappearing in a flash of light. They drop Rupees when struck by an Arrow, a Remote Bomb, a thrown Boomerang, or any melee weapon; though they cannot be killed. Blupees can be found in forests all over Hyrule. Several Blupees gather on Satori Mountain every time the Lord of the Mountain appears.

During the "Legendary Rabbit Trial" side quest, Link must take a picture of a Blupee for Peeks in exchange for a Silver Rupee. Afterward, Peeks speculates that perhaps Bluepees make all the Rupees found in Hyrule.