Aeralfos is a monster from the Wii and GameCube video game The Legend of Zelda: Twilight Princess. They are flying members of the Lizalfos and Dinolfos species, and normally appear as mini-bosses because of their great strength. Unlike the other members of this family, the Aeralfos have gained the ability to fly thanks to their brand new set of wings. It'll oftentimes use this new gained ability to its advantage as it flies around the stadium which you're fighting in.
All Aeralfos seems to be armed with a sharp sword and shield, the latter of which will prove useful on Link's part if he wishes to lure the enemy closer to him, which happens to be essential. To do this, you'll have to shoot your clawshot at them when they're guarding themselves. After that, the clawshot will drag them in, allowing you to harm him.